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Finding the Fourth Proportional to 461,572.47, 636,467.86 and 300,128.13

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Solution

The fourth proportional to 461,572.47, 636,467.86 and 300,128.13 is: 413,850.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,572.47 : 636,467.86 = 300,128.13 : x
  2. Step 2: Convert to fraction form
    461,572.47/636,467.86 = 300,128.13/x
  3. Step 3: Cross multiply
    461,572.47x = 636,467.86 × 300,128.13
  4. Step 4: Simplify right side
    461,572.47x = 191,021,908,626.90
  5. Step 5: Solve for x
    x = 191,021,908,626.90/461,572.47
  6. Step 6: Final answer
    x = 413,850.31

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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.