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Finding the Fourth Proportional to 607,323.40, 910,985.10 and 207,928.60

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Solution

The fourth proportional to 607,323.40, 910,985.10 and 207,928.60 is: 311,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,323.40 : 910,985.10 = 207,928.60 : x
  2. Step 2: Convert to fraction form
    607,323.40/910,985.10 = 207,928.60/x
  3. Step 3: Cross multiply
    607,323.40x = 910,985.10 × 207,928.60
  4. Step 4: Simplify right side
    607,323.40x = 189,419,856,463.86
  5. Step 5: Solve for x
    x = 189,419,856,463.86/607,323.40
  6. Step 6: Final answer
    x = 311,892.90

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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.