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Finding the Fourth Proportional to 626,543.12, 864,627.33 and 340,063.20

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Solution

The fourth proportional to 626,543.12, 864,627.33 and 340,063.20 is: 469,286.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,543.12 : 864,627.33 = 340,063.20 : x
  2. Step 2: Convert to fraction form
    626,543.12/864,627.33 = 340,063.20/x
  3. Step 3: Cross multiply
    626,543.12x = 864,627.33 × 340,063.20
  4. Step 4: Simplify right side
    626,543.12x = 294,027,936,647.26
  5. Step 5: Solve for x
    x = 294,027,936,647.26/626,543.12
  6. Step 6: Final answer
    x = 469,286.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.