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Finding the Fourth Proportional to 546,345.20, 820,003.80 and 321,424.40

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Solution

The fourth proportional to 546,345.20, 820,003.80 and 321,424.40 is: 482,422.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,345.20 : 820,003.80 = 321,424.40 : x
  2. Step 2: Convert to fraction form
    546,345.20/820,003.80 = 321,424.40/x
  3. Step 3: Cross multiply
    546,345.20x = 820,003.80 × 321,424.40
  4. Step 4: Simplify right side
    546,345.20x = 263,569,229,412.72
  5. Step 5: Solve for x
    x = 263,569,229,412.72/546,345.20
  6. Step 6: Final answer
    x = 482,422.52

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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.