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Finding the Fourth Proportional to 649,476.80, 974,215.20 and 369,540.80

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Solution

The fourth proportional to 649,476.80, 974,215.20 and 369,540.80 is: 554,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,476.80 : 974,215.20 = 369,540.80 : x
  2. Step 2: Convert to fraction form
    649,476.80/974,215.20 = 369,540.80/x
  3. Step 3: Cross multiply
    649,476.80x = 974,215.20 × 369,540.80
  4. Step 4: Simplify right side
    649,476.80x = 360,012,264,380.16
  5. Step 5: Solve for x
    x = 360,012,264,380.16/649,476.80
  6. Step 6: Final answer
    x = 554,311.20

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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.