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Finding the Fourth Proportional to 615,426.30, 923,139.45 and 377,999.10

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Solution

The fourth proportional to 615,426.30, 923,139.45 and 377,999.10 is: 566,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,426.30 : 923,139.45 = 377,999.10 : x
  2. Step 2: Convert to fraction form
    615,426.30/923,139.45 = 377,999.10/x
  3. Step 3: Cross multiply
    615,426.30x = 923,139.45 × 377,999.10
  4. Step 4: Simplify right side
    615,426.30x = 348,945,881,274.50
  5. Step 5: Solve for x
    x = 348,945,881,274.50/615,426.30
  6. Step 6: Final answer
    x = 566,998.65

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Half scale
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Double scale
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Similar ratio
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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.