Home / 725,042.40-1,087,563.60-688,300.80

Finding the Fourth Proportional to 725,042.40, 1,087,563.60 and 688,300.80

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Solution

The fourth proportional to 725,042.40, 1,087,563.60 and 688,300.80 is: 1,032,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,042.40 : 1,087,563.60 = 688,300.80 : x
  2. Step 2: Convert to fraction form
    725,042.40/1,087,563.60 = 688,300.80/x
  3. Step 3: Cross multiply
    725,042.40x = 1,087,563.60 × 688,300.80
  4. Step 4: Simplify right side
    725,042.40x = 748,570,895,930.88
  5. Step 5: Solve for x
    x = 748,570,895,930.88/725,042.40
  6. Step 6: Final answer
    x = 1,032,451.20

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1.5x scale

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.