Home / 725,187.28-1,087,407.06-325,485.40

Finding the Fourth Proportional to 725,187.28, 1,087,407.06 and 325,485.40

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Solution

The fourth proportional to 725,187.28, 1,087,407.06 and 325,485.40 is: 488,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,187.28 : 1,087,407.06 = 325,485.40 : x
  2. Step 2: Convert to fraction form
    725,187.28/1,087,407.06 = 325,485.40/x
  3. Step 3: Cross multiply
    725,187.28x = 1,087,407.06 × 325,485.40
  4. Step 4: Simplify right side
    725,187.28x = 353,935,121,886.92
  5. Step 5: Solve for x
    x = 353,935,121,886.92/725,187.28
  6. Step 6: Final answer
    x = 488,060.30

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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.