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Finding the Fourth Proportional to 615,240.71, 848,905.38 and 353,545.40

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Solution

The fourth proportional to 615,240.71, 848,905.38 and 353,545.40 is: 487,819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,240.71 : 848,905.38 = 353,545.40 : x
  2. Step 2: Convert to fraction form
    615,240.71/848,905.38 = 353,545.40/x
  3. Step 3: Cross multiply
    615,240.71x = 848,905.38 × 353,545.40
  4. Step 4: Simplify right side
    615,240.71x = 300,126,592,134.25
  5. Step 5: Solve for x
    x = 300,126,592,134.25/615,240.71
  6. Step 6: Final answer
    x = 487,819.79

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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.