Home / 859,049.40-1,288,854.36-409,711.90

Finding the Fourth Proportional to 859,049.40, 1,288,854.36 and 409,711.90

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Solution

The fourth proportional to 859,049.40, 1,288,854.36 and 409,711.90 is: 614,701.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,049.40 : 1,288,854.36 = 409,711.90 : x
  2. Step 2: Convert to fraction form
    859,049.40/1,288,854.36 = 409,711.90/x
  3. Step 3: Cross multiply
    859,049.40x = 1,288,854.36 × 409,711.90
  4. Step 4: Simplify right side
    859,049.40x = 528,058,968,658.88
  5. Step 5: Solve for x
    x = 528,058,968,658.88/859,049.40
  6. Step 6: Final answer
    x = 614,701.52

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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.