Home / 725,026.60-1,087,539.90-389,103.40

Finding the Fourth Proportional to 725,026.60, 1,087,539.90 and 389,103.40

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Solution

The fourth proportional to 725,026.60, 1,087,539.90 and 389,103.40 is: 583,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,026.60 : 1,087,539.90 = 389,103.40 : x
  2. Step 2: Convert to fraction form
    725,026.60/1,087,539.90 = 389,103.40/x
  3. Step 3: Cross multiply
    725,026.60x = 1,087,539.90 × 389,103.40
  4. Step 4: Simplify right side
    725,026.60x = 423,165,472,725.66
  5. Step 5: Solve for x
    x = 423,165,472,725.66/725,026.60
  6. Step 6: Final answer
    x = 583,655.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.