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Finding the Fourth Proportional to 553,326.20, 829,989.30 and 343,374.20

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Solution

The fourth proportional to 553,326.20, 829,989.30 and 343,374.20 is: 515,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,326.20 : 829,989.30 = 343,374.20 : x
  2. Step 2: Convert to fraction form
    553,326.20/829,989.30 = 343,374.20/x
  3. Step 3: Cross multiply
    553,326.20x = 829,989.30 × 343,374.20
  4. Step 4: Simplify right side
    553,326.20x = 284,996,911,896.06
  5. Step 5: Solve for x
    x = 284,996,911,896.06/553,326.20
  6. Step 6: Final answer
    x = 515,061.30

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Similar ratio
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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.