Home / 1,399,705.12-1,931,908.14-915,990.04

Finding the Fourth Proportional to 1,399,705.12, 1,931,908.14 and 915,990.04

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Solution

The fourth proportional to 1,399,705.12, 1,931,908.14 and 915,990.04 is: 1,264,272.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,705.12 : 1,931,908.14 = 915,990.04 : x
  2. Step 2: Convert to fraction form
    1,399,705.12/1,931,908.14 = 915,990.04/x
  3. Step 3: Cross multiply
    1,399,705.12x = 1,931,908.14 × 915,990.04
  4. Step 4: Simplify right side
    1,399,705.12x = 1,769,608,614,434.93
  5. Step 5: Solve for x
    x = 1,769,608,614,434.93/1,399,705.12
  6. Step 6: Final answer
    x = 1,264,272.45

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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.