Home / 969,959.77-1,338,308.40-638,781.52

Finding the Fourth Proportional to 969,959.77, 1,338,308.40 and 638,781.52

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Solution

The fourth proportional to 969,959.77, 1,338,308.40 and 638,781.52 is: 881,363.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    969,959.77 : 1,338,308.40 = 638,781.52 : x
  2. Step 2: Convert to fraction form
    969,959.77/1,338,308.40 = 638,781.52/x
  3. Step 3: Cross multiply
    969,959.77x = 1,338,308.40 × 638,781.52
  4. Step 4: Simplify right side
    969,959.77x = 854,886,673,980.77
  5. Step 5: Solve for x
    x = 854,886,673,980.77/969,959.77
  6. Step 6: Final answer
    x = 881,363.02

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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.