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Finding the Fourth Proportional to 618,734.70, 928,102.05 and 478,766.70

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Solution

The fourth proportional to 618,734.70, 928,102.05 and 478,766.70 is: 718,150.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,734.70 : 928,102.05 = 478,766.70 : x
  2. Step 2: Convert to fraction form
    618,734.70/928,102.05 = 478,766.70/x
  3. Step 3: Cross multiply
    618,734.70x = 928,102.05 × 478,766.70
  4. Step 4: Simplify right side
    618,734.70x = 444,344,355,741.74
  5. Step 5: Solve for x
    x = 444,344,355,741.74/618,734.70
  6. Step 6: Final answer
    x = 718,150.05

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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.