Home / 870,250.58-1,305,643.13-415,422.20

Finding the Fourth Proportional to 870,250.58, 1,305,643.13 and 415,422.20

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Solution

The fourth proportional to 870,250.58, 1,305,643.13 and 415,422.20 is: 623,260.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,250.58 : 1,305,643.13 = 415,422.20 : x
  2. Step 2: Convert to fraction form
    870,250.58/1,305,643.13 = 415,422.20/x
  3. Step 3: Cross multiply
    870,250.58x = 1,305,643.13 × 415,422.20
  4. Step 4: Simplify right side
    870,250.58x = 542,393,141,479.49
  5. Step 5: Solve for x
    x = 542,393,141,479.49/870,250.58
  6. Step 6: Final answer
    x = 623,260.88

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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.