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Finding the Fourth Proportional to 649,509.90, 974,264.85 and 492,045.90

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Solution

The fourth proportional to 649,509.90, 974,264.85 and 492,045.90 is: 738,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,509.90 : 974,264.85 = 492,045.90 : x
  2. Step 2: Convert to fraction form
    649,509.90/974,264.85 = 492,045.90/x
  3. Step 3: Cross multiply
    649,509.90x = 974,264.85 × 492,045.90
  4. Step 4: Simplify right side
    649,509.90x = 479,383,024,956.62
  5. Step 5: Solve for x
    x = 479,383,024,956.62/649,509.90
  6. Step 6: Final answer
    x = 738,068.85

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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.