Home / 870,147.40-1,305,221.10-811,098.40

Finding the Fourth Proportional to 870,147.40, 1,305,221.10 and 811,098.40

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Solution

The fourth proportional to 870,147.40, 1,305,221.10 and 811,098.40 is: 1,216,647.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,147.40 : 1,305,221.10 = 811,098.40 : x
  2. Step 2: Convert to fraction form
    870,147.40/1,305,221.10 = 811,098.40/x
  3. Step 3: Cross multiply
    870,147.40x = 1,305,221.10 × 811,098.40
  4. Step 4: Simplify right side
    870,147.40x = 1,058,662,745,856.24
  5. Step 5: Solve for x
    x = 1,058,662,745,856.24/870,147.40
  6. Step 6: Final answer
    x = 1,216,647.60

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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.