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Finding the Fourth Proportional to 474,588.60, 711,882.90 and 457,999.80

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Solution

The fourth proportional to 474,588.60, 711,882.90 and 457,999.80 is: 686,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,588.60 : 711,882.90 = 457,999.80 : x
  2. Step 2: Convert to fraction form
    474,588.60/711,882.90 = 457,999.80/x
  3. Step 3: Cross multiply
    474,588.60x = 711,882.90 × 457,999.80
  4. Step 4: Simplify right side
    474,588.60x = 326,042,225,823.42
  5. Step 5: Solve for x
    x = 326,042,225,823.42/474,588.60
  6. Step 6: Final answer
    x = 686,999.70

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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.