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Finding the Fourth Proportional to 649,507.90, 974,261.85 and 492,043.90

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Solution

The fourth proportional to 649,507.90, 974,261.85 and 492,043.90 is: 738,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,507.90 : 974,261.85 = 492,043.90 : x
  2. Step 2: Convert to fraction form
    649,507.90/974,261.85 = 492,043.90/x
  3. Step 3: Cross multiply
    649,507.90x = 974,261.85 × 492,043.90
  4. Step 4: Simplify right side
    649,507.90x = 479,379,600,295.22
  5. Step 5: Solve for x
    x = 479,379,600,295.22/649,507.90
  6. Step 6: Final answer
    x = 738,065.85

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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.