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Finding the Fourth Proportional to 478,410.80, 717,616.20 and 366,436.40

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Solution

The fourth proportional to 478,410.80, 717,616.20 and 366,436.40 is: 549,654.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,410.80 : 717,616.20 = 366,436.40 : x
  2. Step 2: Convert to fraction form
    478,410.80/717,616.20 = 366,436.40/x
  3. Step 3: Cross multiply
    478,410.80x = 717,616.20 × 366,436.40
  4. Step 4: Simplify right side
    478,410.80x = 262,960,696,909.68
  5. Step 5: Solve for x
    x = 262,960,696,909.68/478,410.80
  6. Step 6: Final answer
    x = 549,654.60

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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.