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Finding the Fourth Proportional to 598,213.80, 897,320.70 and 430,252.20

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Solution

The fourth proportional to 598,213.80, 897,320.70 and 430,252.20 is: 645,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,213.80 : 897,320.70 = 430,252.20 : x
  2. Step 2: Convert to fraction form
    598,213.80/897,320.70 = 430,252.20/x
  3. Step 3: Cross multiply
    598,213.80x = 897,320.70 × 430,252.20
  4. Step 4: Simplify right side
    598,213.80x = 386,074,205,280.54
  5. Step 5: Solve for x
    x = 386,074,205,280.54/598,213.80
  6. Step 6: Final answer
    x = 645,378.30

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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.