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Finding the Fourth Proportional to 657,613.70, 986,809.35 and 479,672.90

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Solution

The fourth proportional to 657,613.70, 986,809.35 and 479,672.90 is: 719,792.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,613.70 : 986,809.35 = 479,672.90 : x
  2. Step 2: Convert to fraction form
    657,613.70/986,809.35 = 479,672.90/x
  3. Step 3: Cross multiply
    657,613.70x = 986,809.35 × 479,672.90
  4. Step 4: Simplify right side
    657,613.70x = 473,345,702,661.62
  5. Step 5: Solve for x
    x = 473,345,702,661.62/657,613.70
  6. Step 6: Final answer
    x = 719,792.95

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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.