Home / 1,086,000.30-1,629,000.45-688,403.70

Finding the Fourth Proportional to 1,086,000.30, 1,629,000.45 and 688,403.70

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Solution

The fourth proportional to 1,086,000.30, 1,629,000.45 and 688,403.70 is: 1,032,605.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,000.30 : 1,629,000.45 = 688,403.70 : x
  2. Step 2: Convert to fraction form
    1,086,000.30/1,629,000.45 = 688,403.70/x
  3. Step 3: Cross multiply
    1,086,000.30x = 1,629,000.45 × 688,403.70
  4. Step 4: Simplify right side
    1,086,000.30x = 1,121,409,937,081.66
  5. Step 5: Solve for x
    x = 1,121,409,937,081.66/1,086,000.30
  6. Step 6: Final answer
    x = 1,032,605.55

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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.