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Finding the Fourth Proportional to 477,964.80, 716,947.20 and 328,665.60

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Solution

The fourth proportional to 477,964.80, 716,947.20 and 328,665.60 is: 492,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,964.80 : 716,947.20 = 328,665.60 : x
  2. Step 2: Convert to fraction form
    477,964.80/716,947.20 = 328,665.60/x
  3. Step 3: Cross multiply
    477,964.80x = 716,947.20 × 328,665.60
  4. Step 4: Simplify right side
    477,964.80x = 235,635,881,656.32
  5. Step 5: Solve for x
    x = 235,635,881,656.32/477,964.80
  6. Step 6: Final answer
    x = 492,998.40

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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.