Home / 875,936.80-1,313,905.20-343,280.80

Finding the Fourth Proportional to 875,936.80, 1,313,905.20 and 343,280.80

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Solution

The fourth proportional to 875,936.80, 1,313,905.20 and 343,280.80 is: 514,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,936.80 : 1,313,905.20 = 343,280.80 : x
  2. Step 2: Convert to fraction form
    875,936.80/1,313,905.20 = 343,280.80/x
  3. Step 3: Cross multiply
    875,936.80x = 1,313,905.20 × 343,280.80
  4. Step 4: Simplify right side
    875,936.80x = 451,038,428,180.16
  5. Step 5: Solve for x
    x = 451,038,428,180.16/875,936.80
  6. Step 6: Final answer
    x = 514,921.20

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Double scale
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Similar ratio
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1.5x scale

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.