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Finding the Fourth Proportional to 591,275.20, 886,912.80 and 402,318.40

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Solution

The fourth proportional to 591,275.20, 886,912.80 and 402,318.40 is: 603,477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,275.20 : 886,912.80 = 402,318.40 : x
  2. Step 2: Convert to fraction form
    591,275.20/886,912.80 = 402,318.40/x
  3. Step 3: Cross multiply
    591,275.20x = 886,912.80 × 402,318.40
  4. Step 4: Simplify right side
    591,275.20x = 356,821,338,635.52
  5. Step 5: Solve for x
    x = 356,821,338,635.52/591,275.20
  6. Step 6: Final answer
    x = 603,477.60

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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.