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Finding the Fourth Proportional to 567,488.52, 783,142.85 and 309,365.61

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Solution

The fourth proportional to 567,488.52, 783,142.85 and 309,365.61 is: 426,929.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,488.52 : 783,142.85 = 309,365.61 : x
  2. Step 2: Convert to fraction form
    567,488.52/783,142.85 = 309,365.61/x
  3. Step 3: Cross multiply
    567,488.52x = 783,142.85 × 309,365.61
  4. Step 4: Simplify right side
    567,488.52x = 242,277,463,960.56
  5. Step 5: Solve for x
    x = 242,277,463,960.56/567,488.52
  6. Step 6: Final answer
    x = 426,929.28

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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.