Home / 1,399,703.12-1,931,905.38-915,988.04

Finding the Fourth Proportional to 1,399,703.12, 1,931,905.38 and 915,988.04

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Solution

The fourth proportional to 1,399,703.12, 1,931,905.38 and 915,988.04 is: 1,264,269.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,703.12 : 1,931,905.38 = 915,988.04 : x
  2. Step 2: Convert to fraction form
    1,399,703.12/1,931,905.38 = 915,988.04/x
  3. Step 3: Cross multiply
    1,399,703.12x = 1,931,905.38 × 915,988.04
  4. Step 4: Simplify right side
    1,399,703.12x = 1,769,602,222,491.66
  5. Step 5: Solve for x
    x = 1,769,602,222,491.66/1,399,703.12
  6. Step 6: Final answer
    x = 1,264,269.68

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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.