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Finding the Fourth Proportional to 993,265.90, 1,369,754.07 and 667,315.42

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Solution

The fourth proportional to 993,265.90, 1,369,754.07 and 667,315.42 is: 920,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,265.90 : 1,369,754.07 = 667,315.42 : x
  2. Step 2: Convert to fraction form
    993,265.90/1,369,754.07 = 667,315.42/x
  3. Step 3: Cross multiply
    993,265.90x = 1,369,754.07 × 667,315.42
  4. Step 4: Simplify right side
    993,265.90x = 914,058,012,518.76
  5. Step 5: Solve for x
    x = 914,058,012,518.76/993,265.90
  6. Step 6: Final answer
    x = 920,255.10

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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.