Home / 716,272.38-988,435.26-393,982.46

Finding the Fourth Proportional to 716,272.38, 988,435.26 and 393,982.46

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Solution

The fourth proportional to 716,272.38, 988,435.26 and 393,982.46 is: 543,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,272.38 : 988,435.26 = 393,982.46 : x
  2. Step 2: Convert to fraction form
    716,272.38/988,435.26 = 393,982.46/x
  3. Step 3: Cross multiply
    716,272.38x = 988,435.26 × 393,982.46
  4. Step 4: Simplify right side
    716,272.38x = 389,426,155,285.54
  5. Step 5: Solve for x
    x = 389,426,155,285.54/716,272.38
  6. Step 6: Final answer
    x = 543,684.45

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Double scale
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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.