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Finding the Fourth Proportional to 574,679.80, 793,065.90 and 320,037.40

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Solution

The fourth proportional to 574,679.80, 793,065.90 and 320,037.40 is: 441,655.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,679.80 : 793,065.90 = 320,037.40 : x
  2. Step 2: Convert to fraction form
    574,679.80/793,065.90 = 320,037.40/x
  3. Step 3: Cross multiply
    574,679.80x = 793,065.90 × 320,037.40
  4. Step 4: Simplify right side
    574,679.80x = 253,810,748,664.66
  5. Step 5: Solve for x
    x = 253,810,748,664.66/574,679.80
  6. Step 6: Final answer
    x = 441,655.94

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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.