Home / 687,673.06-948,973.80-381,731.56

Finding the Fourth Proportional to 687,673.06, 948,973.80 and 381,731.56

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Solution

The fourth proportional to 687,673.06, 948,973.80 and 381,731.56 is: 526,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,673.06 : 948,973.80 = 381,731.56 : x
  2. Step 2: Convert to fraction form
    687,673.06/948,973.80 = 381,731.56/x
  3. Step 3: Cross multiply
    687,673.06x = 948,973.80 × 381,731.56
  4. Step 4: Simplify right side
    687,673.06x = 362,253,249,073.13
  5. Step 5: Solve for x
    x = 362,253,249,073.13/687,673.06
  6. Step 6: Final answer
    x = 526,781.21

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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.