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Finding the Fourth Proportional to 615,926.80, 923,890.20 and 403,350.40

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Solution

The fourth proportional to 615,926.80, 923,890.20 and 403,350.40 is: 605,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,926.80 : 923,890.20 = 403,350.40 : x
  2. Step 2: Convert to fraction form
    615,926.80/923,890.20 = 403,350.40/x
  3. Step 3: Cross multiply
    615,926.80x = 923,890.20 × 403,350.40
  4. Step 4: Simplify right side
    615,926.80x = 372,651,481,726.08
  5. Step 5: Solve for x
    x = 372,651,481,726.08/615,926.80
  6. Step 6: Final answer
    x = 605,025.60

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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.