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Finding the Fourth Proportional to 553,332.20, 829,998.30 and 343,380.20

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Solution

The fourth proportional to 553,332.20, 829,998.30 and 343,380.20 is: 515,070.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,332.20 : 829,998.30 = 343,380.20 : x
  2. Step 2: Convert to fraction form
    553,332.20/829,998.30 = 343,380.20/x
  3. Step 3: Cross multiply
    553,332.20x = 829,998.30 × 343,380.20
  4. Step 4: Simplify right side
    553,332.20x = 285,004,982,253.66
  5. Step 5: Solve for x
    x = 285,004,982,253.66/553,332.20
  6. Step 6: Final answer
    x = 515,070.30

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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.