Home / 870,865.57-1,306,380.80-338,427.66

Finding the Fourth Proportional to 870,865.57, 1,306,380.80 and 338,427.66

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Solution

The fourth proportional to 870,865.57, 1,306,380.80 and 338,427.66 is: 507,673.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,865.57 : 1,306,380.80 = 338,427.66 : x
  2. Step 2: Convert to fraction form
    870,865.57/1,306,380.80 = 338,427.66/x
  3. Step 3: Cross multiply
    870,865.57x = 1,306,380.80 × 338,427.66
  4. Step 4: Simplify right side
    870,865.57x = 442,115,398,059.00
  5. Step 5: Solve for x
    x = 442,115,398,059.00/870,865.57
  6. Step 6: Final answer
    x = 507,673.53

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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.