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Finding the Fourth Proportional to 526,331.79, 726,293.79 and 311,434.20

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Solution

The fourth proportional to 526,331.79, 726,293.79 and 311,434.20 is: 429,753.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,331.79 : 726,293.79 = 311,434.20 : x
  2. Step 2: Convert to fraction form
    526,331.79/726,293.79 = 311,434.20/x
  3. Step 3: Cross multiply
    526,331.79x = 726,293.79 × 311,434.20
  4. Step 4: Simplify right side
    526,331.79x = 226,192,725,453.62
  5. Step 5: Solve for x
    x = 226,192,725,453.62/526,331.79
  6. Step 6: Final answer
    x = 429,753.11

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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.