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Finding the Fourth Proportional to 572,722.62, 790,357.22 and 318,097.50

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Solution

The fourth proportional to 572,722.62, 790,357.22 and 318,097.50 is: 438,974.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,722.62 : 790,357.22 = 318,097.50 : x
  2. Step 2: Convert to fraction form
    572,722.62/790,357.22 = 318,097.50/x
  3. Step 3: Cross multiply
    572,722.62x = 790,357.22 × 318,097.50
  4. Step 4: Simplify right side
    572,722.62x = 251,410,655,788.95
  5. Step 5: Solve for x
    x = 251,410,655,788.95/572,722.62
  6. Step 6: Final answer
    x = 438,974.55

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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.