Home / 1,021,887,307.25-1,410,205,101.81-551,988,835.80

Finding the Fourth Proportional to 1,021,887,307.25, 1,410,205,101.81 and 551,988,835.80

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Solution

The fourth proportional to 1,021,887,307.25, 1,410,205,101.81 and 551,988,835.80 is: 761,744,927.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,887,307.25 : 1,410,205,101.81 = 551,988,835.80 : x
  2. Step 2: Convert to fraction form
    1,021,887,307.25/1,410,205,101.81 = 551,988,835.80/x
  3. Step 3: Cross multiply
    1,021,887,307.25x = 1,410,205,101.81 × 551,988,835.80
  4. Step 4: Simplify right side
    1,021,887,307.25x = 778,417,472,391,008,128
  5. Step 5: Solve for x
    x = 778,417,472,391,008,128/1,021,887,307.25
  6. Step 6: Final answer
    x = 761,744,927.13

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Half scale
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Double scale
Find fourth proportional to 1,021,887,308.25, 1,410,205,103.19 and 551,988,836.80
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.