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Finding the Fourth Proportional to 631,084.48, 870,932 and 344,631.20

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Solution

The fourth proportional to 631,084.48, 870,932 and 344,631.20 is: 475,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,084.48 : 870,932 = 344,631.20 : x
  2. Step 2: Convert to fraction form
    631,084.48/870,932 = 344,631.20/x
  3. Step 3: Cross multiply
    631,084.48x = 870,932 × 344,631.20
  4. Step 4: Simplify right side
    631,084.48x = 300,150,340,278.40
  5. Step 5: Solve for x
    x = 300,150,340,278.40/631,084.48
  6. Step 6: Final answer
    x = 475,610.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.