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Finding the Fourth Proportional to 715,002.01, 986,722.05 and 420,672.27

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Solution

The fourth proportional to 715,002.01, 986,722.05 and 420,672.27 is: 580,539.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,002.01 : 986,722.05 = 420,672.27 : x
  2. Step 2: Convert to fraction form
    715,002.01/986,722.05 = 420,672.27/x
  3. Step 3: Cross multiply
    715,002.01x = 986,722.05 × 420,672.27
  4. Step 4: Simplify right side
    715,002.01x = 415,086,606,229.40
  5. Step 5: Solve for x
    x = 415,086,606,229.40/715,002.01
  6. Step 6: Final answer
    x = 580,539.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.