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Finding the Fourth Proportional to 490,068,019.20, 734,206,233.60 and 398,696,908.80

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Solution

The fourth proportional to 490,068,019.20, 734,206,233.60 and 398,696,908.80 is: 597,316,585.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,068,019.20 : 734,206,233.60 = 398,696,908.80 : x
  2. Step 2: Convert to fraction form
    490,068,019.20/734,206,233.60 = 398,696,908.80/x
  3. Step 3: Cross multiply
    490,068,019.20x = 734,206,233.60 × 398,696,908.80
  4. Step 4: Simplify right side
    490,068,019.20x = 292,725,755,758,010,688
  5. Step 5: Solve for x
    x = 292,725,755,758,010,688/490,068,019.20
  6. Step 6: Final answer
    x = 597,316,585.23

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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.