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Finding the Fourth Proportional to 522,604,424.59, 721,166,662.36 and 287,610,170.15

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Solution

The fourth proportional to 522,604,424.59, 721,166,662.36 and 287,610,170.15 is: 396,886,931.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,604,424.59 : 721,166,662.36 = 287,610,170.15 : x
  2. Step 2: Convert to fraction form
    522,604,424.59/721,166,662.36 = 287,610,170.15/x
  3. Step 3: Cross multiply
    522,604,424.59x = 721,166,662.36 × 287,610,170.15
  4. Step 4: Simplify right side
    522,604,424.59x = 207,414,866,470,029,632
  5. Step 5: Solve for x
    x = 207,414,866,470,029,632/522,604,424.59
  6. Step 6: Final answer
    x = 396,886,931.51

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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.