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Finding the Fourth Proportional to 478,316.28, 717,474.42 and 416,730.36

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Solution

The fourth proportional to 478,316.28, 717,474.42 and 416,730.36 is: 625,095.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,316.28 : 717,474.42 = 416,730.36 : x
  2. Step 2: Convert to fraction form
    478,316.28/717,474.42 = 416,730.36/x
  3. Step 3: Cross multiply
    478,316.28x = 717,474.42 × 416,730.36
  4. Step 4: Simplify right side
    478,316.28x = 298,993,373,337.39
  5. Step 5: Solve for x
    x = 298,993,373,337.39/478,316.28
  6. Step 6: Final answer
    x = 625,095.54

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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.