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Finding the Fourth Proportional to 573,062.93, 790,811.20 and 318,407.57

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Solution

The fourth proportional to 573,062.93, 790,811.20 and 318,407.57 is: 439,393.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,062.93 : 790,811.20 = 318,407.57 : x
  2. Step 2: Convert to fraction form
    573,062.93/790,811.20 = 318,407.57/x
  3. Step 3: Cross multiply
    573,062.93x = 790,811.20 × 318,407.57
  4. Step 4: Simplify right side
    573,062.93x = 251,800,272,520.78
  5. Step 5: Solve for x
    x = 251,800,272,520.78/573,062.93
  6. Step 6: Final answer
    x = 439,393.75

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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.