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Finding the Fourth Proportional to 474,005.40, 711,008.10 and 306,043.80

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Solution

The fourth proportional to 474,005.40, 711,008.10 and 306,043.80 is: 459,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,005.40 : 711,008.10 = 306,043.80 : x
  2. Step 2: Convert to fraction form
    474,005.40/711,008.10 = 306,043.80/x
  3. Step 3: Cross multiply
    474,005.40x = 711,008.10 × 306,043.80
  4. Step 4: Simplify right side
    474,005.40x = 217,599,620,754.78
  5. Step 5: Solve for x
    x = 217,599,620,754.78/474,005.40
  6. Step 6: Final answer
    x = 459,065.70

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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.