Home / 1,078,869.79-1,487,999.01-691,722.19

Finding the Fourth Proportional to 1,078,869.79, 1,487,999.01 and 691,722.19

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Solution

The fourth proportional to 1,078,869.79, 1,487,999.01 and 691,722.19 is: 954,037.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,869.79 : 1,487,999.01 = 691,722.19 : x
  2. Step 2: Convert to fraction form
    1,078,869.79/1,487,999.01 = 691,722.19/x
  3. Step 3: Cross multiply
    1,078,869.79x = 1,487,999.01 × 691,722.19
  4. Step 4: Simplify right side
    1,078,869.79x = 1,029,281,933,915.03
  5. Step 5: Solve for x
    x = 1,029,281,933,915.03/1,078,869.79
  6. Step 6: Final answer
    x = 954,037.22

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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.