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Finding the Fourth Proportional to 661,569,269.30, 992,353,903.95 and 558,257,138.90

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Solution

The fourth proportional to 661,569,269.30, 992,353,903.95 and 558,257,138.90 is: 837,385,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,569,269.30 : 992,353,903.95 = 558,257,138.90 : x
  2. Step 2: Convert to fraction form
    661,569,269.30/992,353,903.95 = 558,257,138.90/x
  3. Step 3: Cross multiply
    661,569,269.30x = 992,353,903.95 × 558,257,138.90
  4. Step 4: Simplify right side
    661,569,269.30x = 553,988,651,195,372,416
  5. Step 5: Solve for x
    x = 553,988,651,195,372,416/661,569,269.30
  6. Step 6: Final answer
    x = 837,385,708.35

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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.