Home / 725,611.20-1,087,509.60-370,766.40

Finding the Fourth Proportional to 725,611.20, 1,087,509.60 and 370,766.40

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Solution

The fourth proportional to 725,611.20, 1,087,509.60 and 370,766.40 is: 555,686.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,611.20 : 1,087,509.60 = 370,766.40 : x
  2. Step 2: Convert to fraction form
    725,611.20/1,087,509.60 = 370,766.40/x
  3. Step 3: Cross multiply
    725,611.20x = 1,087,509.60 × 370,766.40
  4. Step 4: Simplify right side
    725,611.20x = 403,212,019,357.44
  5. Step 5: Solve for x
    x = 403,212,019,357.44/725,611.20
  6. Step 6: Final answer
    x = 555,686.05

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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.