Home / 918,989,664.35-1,378,765,307.39-550,934,360.51

Finding the Fourth Proportional to 918,989,664.35, 1,378,765,307.39 and 550,934,360.51

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Solution

The fourth proportional to 918,989,664.35, 1,378,765,307.39 and 550,934,360.51 is: 826,569,886.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,989,664.35 : 1,378,765,307.39 = 550,934,360.51 : x
  2. Step 2: Convert to fraction form
    918,989,664.35/1,378,765,307.39 = 550,934,360.51/x
  3. Step 3: Cross multiply
    918,989,664.35x = 1,378,765,307.39 × 550,934,360.51
  4. Step 4: Simplify right side
    918,989,664.35x = 759,609,182,910,634,752
  5. Step 5: Solve for x
    x = 759,609,182,910,634,752/918,989,664.35
  6. Step 6: Final answer
    x = 826,569,886.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.