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Finding the Fourth Proportional to 555,387,817.68, 766,513,263.78 and 343,762,527.78

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Solution

The fourth proportional to 555,387,817.68, 766,513,263.78 and 343,762,527.78 is: 474,440,613.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,387,817.68 : 766,513,263.78 = 343,762,527.78 : x
  2. Step 2: Convert to fraction form
    555,387,817.68/766,513,263.78 = 343,762,527.78/x
  3. Step 3: Cross multiply
    555,387,817.68x = 766,513,263.78 × 343,762,527.78
  4. Step 4: Simplify right side
    555,387,817.68x = 263,498,537,133,910,688
  5. Step 5: Solve for x
    x = 263,498,537,133,910,688/555,387,817.68
  6. Step 6: Final answer
    x = 474,440,613.83

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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.