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Finding the Fourth Proportional to 545,330.81, 752,689.13 and 315,851.12

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Solution

The fourth proportional to 545,330.81, 752,689.13 and 315,851.12 is: 435,951.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,330.81 : 752,689.13 = 315,851.12 : x
  2. Step 2: Convert to fraction form
    545,330.81/752,689.13 = 315,851.12/x
  3. Step 3: Cross multiply
    545,330.81x = 752,689.13 × 315,851.12
  4. Step 4: Simplify right side
    545,330.81x = 237,737,699,379.62
  5. Step 5: Solve for x
    x = 237,737,699,379.62/545,330.81
  6. Step 6: Final answer
    x = 435,951.35

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1.5x scale

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.