Home / 913,781.28-1,261,002.42-505,874.46

Finding the Fourth Proportional to 913,781.28, 1,261,002.42 and 505,874.46

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Solution

The fourth proportional to 913,781.28, 1,261,002.42 and 505,874.46 is: 698,098.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,781.28 : 1,261,002.42 = 505,874.46 : x
  2. Step 2: Convert to fraction form
    913,781.28/1,261,002.42 = 505,874.46/x
  3. Step 3: Cross multiply
    913,781.28x = 1,261,002.42 × 505,874.46
  4. Step 4: Simplify right side
    913,781.28x = 637,908,918,276.19
  5. Step 5: Solve for x
    x = 637,908,918,276.19/913,781.28
  6. Step 6: Final answer
    x = 698,098.04

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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.