Home / 818,718.40-1,228,077.60-688,810.60

Finding the Fourth Proportional to 818,718.40, 1,228,077.60 and 688,810.60

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Solution

The fourth proportional to 818,718.40, 1,228,077.60 and 688,810.60 is: 1,033,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,718.40 : 1,228,077.60 = 688,810.60 : x
  2. Step 2: Convert to fraction form
    818,718.40/1,228,077.60 = 688,810.60/x
  3. Step 3: Cross multiply
    818,718.40x = 1,228,077.60 × 688,810.60
  4. Step 4: Simplify right side
    818,718.40x = 845,912,868,502.56
  5. Step 5: Solve for x
    x = 845,912,868,502.56/818,718.40
  6. Step 6: Final answer
    x = 1,033,215.90

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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.