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Finding the Fourth Proportional to 506,500.20, 759,750.30 and 317,543.40

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Solution

The fourth proportional to 506,500.20, 759,750.30 and 317,543.40 is: 476,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,500.20 : 759,750.30 = 317,543.40 : x
  2. Step 2: Convert to fraction form
    506,500.20/759,750.30 = 317,543.40/x
  3. Step 3: Cross multiply
    506,500.20x = 759,750.30 × 317,543.40
  4. Step 4: Simplify right side
    506,500.20x = 241,253,693,413.02
  5. Step 5: Solve for x
    x = 241,253,693,413.02/506,500.20
  6. Step 6: Final answer
    x = 476,315.10

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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.