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Finding the Fourth Proportional to 545,079.75, 752,040.75 and 309,294.96

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Solution

The fourth proportional to 545,079.75, 752,040.75 and 309,294.96 is: 426,730.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,079.75 : 752,040.75 = 309,294.96 : x
  2. Step 2: Convert to fraction form
    545,079.75/752,040.75 = 309,294.96/x
  3. Step 3: Cross multiply
    545,079.75x = 752,040.75 × 309,294.96
  4. Step 4: Simplify right side
    545,079.75x = 232,602,413,689.62
  5. Step 5: Solve for x
    x = 232,602,413,689.62/545,079.75
  6. Step 6: Final answer
    x = 426,730.98

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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.