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Finding the Fourth Proportional to 572,755.90, 790,356.85 and 331,054.12

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Solution

The fourth proportional to 572,755.90, 790,356.85 and 331,054.12 is: 456,827.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,755.90 : 790,356.85 = 331,054.12 : x
  2. Step 2: Convert to fraction form
    572,755.90/790,356.85 = 331,054.12/x
  3. Step 3: Cross multiply
    572,755.90x = 790,356.85 × 331,054.12
  4. Step 4: Simplify right side
    572,755.90x = 261,650,891,462.72
  5. Step 5: Solve for x
    x = 261,650,891,462.72/572,755.90
  6. Step 6: Final answer
    x = 456,827.93

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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.