Home / 859,049.90-1,288,855.11-409,712.40

Finding the Fourth Proportional to 859,049.90, 1,288,855.11 and 409,712.40

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Solution

The fourth proportional to 859,049.90, 1,288,855.11 and 409,712.40 is: 614,702.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,049.90 : 1,288,855.11 = 409,712.40 : x
  2. Step 2: Convert to fraction form
    859,049.90/1,288,855.11 = 409,712.40/x
  3. Step 3: Cross multiply
    859,049.90x = 1,288,855.11 × 409,712.40
  4. Step 4: Simplify right side
    859,049.90x = 528,059,920,370.36
  5. Step 5: Solve for x
    x = 528,059,920,370.36/859,049.90
  6. Step 6: Final answer
    x = 614,702.27

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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.