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Finding the Fourth Proportional to 719,868, 993,417.92 and 418,081.44

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Solution

The fourth proportional to 719,868, 993,417.92 and 418,081.44 is: 576,952.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,868 : 993,417.92 = 418,081.44 : x
  2. Step 2: Convert to fraction form
    719,868/993,417.92 = 418,081.44/x
  3. Step 3: Cross multiply
    719,868x = 993,417.92 × 418,081.44
  4. Step 4: Simplify right side
    719,868x = 415,329,594,515.41
  5. Step 5: Solve for x
    x = 415,329,594,515.41/719,868
  6. Step 6: Final answer
    x = 576,952.43

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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.