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Finding the Fourth Proportional to 572,714.25, 790,330.77 and 318,049.03

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Solution

The fourth proportional to 572,714.25, 790,330.77 and 318,049.03 is: 438,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,714.25 : 790,330.77 = 318,049.03 : x
  2. Step 2: Convert to fraction form
    572,714.25/790,330.77 = 318,049.03/x
  3. Step 3: Cross multiply
    572,714.25x = 790,330.77 × 318,049.03
  4. Step 4: Simplify right side
    572,714.25x = 251,363,935,765.57
  5. Step 5: Solve for x
    x = 251,363,935,765.57/572,714.25
  6. Step 6: Final answer
    x = 438,899.39

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1.5x scale

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.