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Finding the Fourth Proportional to 639,841,762.89, 959,714,778.15 and 230,897,898.81

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Solution

The fourth proportional to 639,841,762.89, 959,714,778.15 and 230,897,898.81 is: 346,329,574.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,841,762.89 : 959,714,778.15 = 230,897,898.81 : x
  2. Step 2: Convert to fraction form
    639,841,762.89/959,714,778.15 = 230,897,898.81/x
  3. Step 3: Cross multiply
    639,841,762.89x = 959,714,778.15 × 230,897,898.81
  4. Step 4: Simplify right side
    639,841,762.89x = 221,596,125,731,740,288
  5. Step 5: Solve for x
    x = 221,596,125,731,740,288/639,841,762.89
  6. Step 6: Final answer
    x = 346,329,574.88

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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.