Home / 860,138.10-1,290,207.15-707,922.90

Finding the Fourth Proportional to 860,138.10, 1,290,207.15 and 707,922.90

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Solution

The fourth proportional to 860,138.10, 1,290,207.15 and 707,922.90 is: 1,061,884.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,138.10 : 1,290,207.15 = 707,922.90 : x
  2. Step 2: Convert to fraction form
    860,138.10/1,290,207.15 = 707,922.90/x
  3. Step 3: Cross multiply
    860,138.10x = 1,290,207.15 × 707,922.90
  4. Step 4: Simplify right side
    860,138.10x = 913,367,187,228.74
  5. Step 5: Solve for x
    x = 913,367,187,228.74/860,138.10
  6. Step 6: Final answer
    x = 1,061,884.35

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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.