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Finding the Fourth Proportional to 615,187.30, 923,630.64 and 425,179.12

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Solution

The fourth proportional to 615,187.30, 923,630.64 and 425,179.12 is: 638,355.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,187.30 : 923,630.64 = 425,179.12 : x
  2. Step 2: Convert to fraction form
    615,187.30/923,630.64 = 425,179.12/x
  3. Step 3: Cross multiply
    615,187.30x = 923,630.64 × 425,179.12
  4. Step 4: Simplify right side
    615,187.30x = 392,708,462,720.24
  5. Step 5: Solve for x
    x = 392,708,462,720.24/615,187.30
  6. Step 6: Final answer
    x = 638,355.93

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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.