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Finding the Fourth Proportional to 408,030.70, 612,046.05 and 399,282.70

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Solution

The fourth proportional to 408,030.70, 612,046.05 and 399,282.70 is: 598,924.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,030.70 : 612,046.05 = 399,282.70 : x
  2. Step 2: Convert to fraction form
    408,030.70/612,046.05 = 399,282.70/x
  3. Step 3: Cross multiply
    408,030.70x = 612,046.05 × 399,282.70
  4. Step 4: Simplify right side
    408,030.70x = 244,379,399,368.34
  5. Step 5: Solve for x
    x = 244,379,399,368.34/408,030.70
  6. Step 6: Final answer
    x = 598,924.05

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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.