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Finding the Fourth Proportional to 477,742.60, 716,613.90 and 328,443.40

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Solution

The fourth proportional to 477,742.60, 716,613.90 and 328,443.40 is: 492,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,742.60 : 716,613.90 = 328,443.40 : x
  2. Step 2: Convert to fraction form
    477,742.60/716,613.90 = 328,443.40/x
  3. Step 3: Cross multiply
    477,742.60x = 716,613.90 × 328,443.40
  4. Step 4: Simplify right side
    477,742.60x = 235,367,105,803.26
  5. Step 5: Solve for x
    x = 235,367,105,803.26/477,742.60
  6. Step 6: Final answer
    x = 492,665.10

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Similar ratio
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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.