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Finding the Fourth Proportional to 478,975.20, 718,462.80 and 360,002.40

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Solution

The fourth proportional to 478,975.20, 718,462.80 and 360,002.40 is: 540,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,975.20 : 718,462.80 = 360,002.40 : x
  2. Step 2: Convert to fraction form
    478,975.20/718,462.80 = 360,002.40/x
  3. Step 3: Cross multiply
    478,975.20x = 718,462.80 × 360,002.40
  4. Step 4: Simplify right side
    478,975.20x = 258,648,332,310.72
  5. Step 5: Solve for x
    x = 258,648,332,310.72/478,975.20
  6. Step 6: Final answer
    x = 540,003.60

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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.