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Finding the Fourth Proportional to 663,332.40, 915,401.82 and 376,868.22

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Solution

The fourth proportional to 663,332.40, 915,401.82 and 376,868.22 is: 520,079.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,332.40 : 915,401.82 = 376,868.22 : x
  2. Step 2: Convert to fraction form
    663,332.40/915,401.82 = 376,868.22/x
  3. Step 3: Cross multiply
    663,332.40x = 915,401.82 × 376,868.22
  4. Step 4: Simplify right side
    663,332.40x = 344,985,854,488.16
  5. Step 5: Solve for x
    x = 344,985,854,488.16/663,332.40
  6. Step 6: Final answer
    x = 520,079.91

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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.