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Finding the Fourth Proportional to 615,345.40, 923,061.30 and 349,233.40

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Solution

The fourth proportional to 615,345.40, 923,061.30 and 349,233.40 is: 523,874.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,345.40 : 923,061.30 = 349,233.40 : x
  2. Step 2: Convert to fraction form
    615,345.40/923,061.30 = 349,233.40/x
  3. Step 3: Cross multiply
    615,345.40x = 923,061.30 × 349,233.40
  4. Step 4: Simplify right side
    615,345.40x = 322,363,836,207.42
  5. Step 5: Solve for x
    x = 322,363,836,207.42/615,345.40
  6. Step 6: Final answer
    x = 523,874.62

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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.