Home / 1,225,580.88-1,691,301.54-689,036.88

Finding the Fourth Proportional to 1,225,580.88, 1,691,301.54 and 689,036.88

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Solution

The fourth proportional to 1,225,580.88, 1,691,301.54 and 689,036.88 is: 950,870.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,580.88 : 1,691,301.54 = 689,036.88 : x
  2. Step 2: Convert to fraction form
    1,225,580.88/1,691,301.54 = 689,036.88/x
  3. Step 3: Cross multiply
    1,225,580.88x = 1,691,301.54 × 689,036.88
  4. Step 4: Simplify right side
    1,225,580.88x = 1,165,369,136,260.80
  5. Step 5: Solve for x
    x = 1,165,369,136,260.80/1,225,580.88
  6. Step 6: Final answer
    x = 950,870.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.