Home / 870,150.90-1,305,226.35-811,101.90

Finding the Fourth Proportional to 870,150.90, 1,305,226.35 and 811,101.90

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Solution

The fourth proportional to 870,150.90, 1,305,226.35 and 811,101.90 is: 1,216,652.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,150.90 : 1,305,226.35 = 811,101.90 : x
  2. Step 2: Convert to fraction form
    870,150.90/1,305,226.35 = 811,101.90/x
  3. Step 3: Cross multiply
    870,150.90x = 1,305,226.35 × 811,101.90
  4. Step 4: Simplify right side
    870,150.90x = 1,058,671,572,415.07
  5. Step 5: Solve for x
    x = 1,058,671,572,415.07/870,150.90
  6. Step 6: Final answer
    x = 1,216,652.85

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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.