Home / 860,781.09-1,290,909.06-691,900.95

Finding the Fourth Proportional to 860,781.09, 1,290,909.06 and 691,900.95

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Solution

The fourth proportional to 860,781.09, 1,290,909.06 and 691,900.95 is: 1,037,640.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,781.09 : 1,290,909.06 = 691,900.95 : x
  2. Step 2: Convert to fraction form
    860,781.09/1,290,909.06 = 691,900.95/x
  3. Step 3: Cross multiply
    860,781.09x = 1,290,909.06 × 691,900.95
  4. Step 4: Simplify right side
    860,781.09x = 893,181,204,977.61
  5. Step 5: Solve for x
    x = 893,181,204,977.61/860,781.09
  6. Step 6: Final answer
    x = 1,037,640.37

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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.