Home / 860,139.10-1,290,208.65-707,923.90

Finding the Fourth Proportional to 860,139.10, 1,290,208.65 and 707,923.90

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Solution

The fourth proportional to 860,139.10, 1,290,208.65 and 707,923.90 is: 1,061,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,139.10 : 1,290,208.65 = 707,923.90 : x
  2. Step 2: Convert to fraction form
    860,139.10/1,290,208.65 = 707,923.90/x
  3. Step 3: Cross multiply
    860,139.10x = 1,290,208.65 × 707,923.90
  4. Step 4: Simplify right side
    860,139.10x = 913,369,539,321.74
  5. Step 5: Solve for x
    x = 913,369,539,321.74/860,139.10
  6. Step 6: Final answer
    x = 1,061,885.85

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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.