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Finding the Fourth Proportional to 587,647.80, 881,471.70 and 288,320.40

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Solution

The fourth proportional to 587,647.80, 881,471.70 and 288,320.40 is: 432,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,647.80 : 881,471.70 = 288,320.40 : x
  2. Step 2: Convert to fraction form
    587,647.80/881,471.70 = 288,320.40/x
  3. Step 3: Cross multiply
    587,647.80x = 881,471.70 × 288,320.40
  4. Step 4: Simplify right side
    587,647.80x = 254,146,273,132.68
  5. Step 5: Solve for x
    x = 254,146,273,132.68/587,647.80
  6. Step 6: Final answer
    x = 432,480.60

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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.