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Finding the Fourth Proportional to 474,655.20, 711,982.80 and 443,320.80

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Solution

The fourth proportional to 474,655.20, 711,982.80 and 443,320.80 is: 664,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,655.20 : 711,982.80 = 443,320.80 : x
  2. Step 2: Convert to fraction form
    474,655.20/711,982.80 = 443,320.80/x
  3. Step 3: Cross multiply
    474,655.20x = 711,982.80 × 443,320.80
  4. Step 4: Simplify right side
    474,655.20x = 315,636,784,482.24
  5. Step 5: Solve for x
    x = 315,636,784,482.24/474,655.20
  6. Step 6: Final answer
    x = 664,981.20

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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.