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Finding the Fourth Proportional to 615,505.04, 923,247.92 and 315,812.64

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Solution

The fourth proportional to 615,505.04, 923,247.92 and 315,812.64 is: 473,714.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,505.04 : 923,247.92 = 315,812.64 : x
  2. Step 2: Convert to fraction form
    615,505.04/923,247.92 = 315,812.64/x
  3. Step 3: Cross multiply
    615,505.04x = 923,247.92 × 315,812.64
  4. Step 4: Simplify right side
    615,505.04x = 291,573,362,989.71
  5. Step 5: Solve for x
    x = 291,573,362,989.71/615,505.04
  6. Step 6: Final answer
    x = 473,714.01

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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.