Home / 725,259.20-1,087,888.80-720,010.40

Finding the Fourth Proportional to 725,259.20, 1,087,888.80 and 720,010.40

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Solution

The fourth proportional to 725,259.20, 1,087,888.80 and 720,010.40 is: 1,080,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,259.20 : 1,087,888.80 = 720,010.40 : x
  2. Step 2: Convert to fraction form
    725,259.20/1,087,888.80 = 720,010.40/x
  3. Step 3: Cross multiply
    725,259.20x = 1,087,888.80 × 720,010.40
  4. Step 4: Simplify right side
    725,259.20x = 783,291,250,043.52
  5. Step 5: Solve for x
    x = 783,291,250,043.52/725,259.20
  6. Step 6: Final answer
    x = 1,080,015.60

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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.