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Finding the Fourth Proportional to 615,371.60, 922,366.20 and 315,736.40

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Solution

The fourth proportional to 615,371.60, 922,366.20 and 315,736.40 is: 473,249.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,371.60 : 922,366.20 = 315,736.40 : x
  2. Step 2: Convert to fraction form
    615,371.60/922,366.20 = 315,736.40/x
  3. Step 3: Cross multiply
    615,371.60x = 922,366.20 × 315,736.40
  4. Step 4: Simplify right side
    615,371.60x = 291,224,583,469.68
  5. Step 5: Solve for x
    x = 291,224,583,469.68/615,371.60
  6. Step 6: Final answer
    x = 473,249.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.