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Finding the Fourth Proportional to 547,837.60, 822,370.80 and 423,728.80

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Solution

The fourth proportional to 547,837.60, 822,370.80 and 423,728.80 is: 636,068.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,837.60 : 822,370.80 = 423,728.80 : x
  2. Step 2: Convert to fraction form
    547,837.60/822,370.80 = 423,728.80/x
  3. Step 3: Cross multiply
    547,837.60x = 822,370.80 × 423,728.80
  4. Step 4: Simplify right side
    547,837.60x = 348,462,192,239.04
  5. Step 5: Solve for x
    x = 348,462,192,239.04/547,837.60
  6. Step 6: Final answer
    x = 636,068.41

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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.