Home / 1,399,704.12-1,931,906.76-915,989.04

Finding the Fourth Proportional to 1,399,704.12, 1,931,906.76 and 915,989.04

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Solution

The fourth proportional to 1,399,704.12, 1,931,906.76 and 915,989.04 is: 1,264,271.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,704.12 : 1,931,906.76 = 915,989.04 : x
  2. Step 2: Convert to fraction form
    1,399,704.12/1,931,906.76 = 915,989.04/x
  3. Step 3: Cross multiply
    1,399,704.12x = 1,931,906.76 × 915,989.04
  4. Step 4: Simplify right side
    1,399,704.12x = 1,769,605,418,461.91
  5. Step 5: Solve for x
    x = 1,769,605,418,461.91/1,399,704.12
  6. Step 6: Final answer
    x = 1,264,271.06

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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.