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Finding the Fourth Proportional to 555,387.14, 766,432.92 and 300,738.32

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Solution

The fourth proportional to 555,387.14, 766,432.92 and 300,738.32 is: 415,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,387.14 : 766,432.92 = 300,738.32 : x
  2. Step 2: Convert to fraction form
    555,387.14/766,432.92 = 300,738.32/x
  3. Step 3: Cross multiply
    555,387.14x = 766,432.92 × 300,738.32
  4. Step 4: Simplify right side
    555,387.14x = 230,495,744,921.33
  5. Step 5: Solve for x
    x = 230,495,744,921.33/555,387.14
  6. Step 6: Final answer
    x = 415,018.16

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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.