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Finding the Fourth Proportional to 547,920.12, 822,140.88 and 379,699.32

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Solution

The fourth proportional to 547,920.12, 822,140.88 and 379,699.32 is: 569,729.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,920.12 : 822,140.88 = 379,699.32 : x
  2. Step 2: Convert to fraction form
    547,920.12/822,140.88 = 379,699.32/x
  3. Step 3: Cross multiply
    547,920.12x = 822,140.88 × 379,699.32
  4. Step 4: Simplify right side
    547,920.12x = 312,166,333,080.20
  5. Step 5: Solve for x
    x = 312,166,333,080.20/547,920.12
  6. Step 6: Final answer
    x = 569,729.64

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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.