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Finding the Fourth Proportional to 563,669.76, 777,854.72 and 318,650.72

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Solution

The fourth proportional to 563,669.76, 777,854.72 and 318,650.72 is: 439,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,669.76 : 777,854.72 = 318,650.72 : x
  2. Step 2: Convert to fraction form
    563,669.76/777,854.72 = 318,650.72/x
  3. Step 3: Cross multiply
    563,669.76x = 777,854.72 × 318,650.72
  4. Step 4: Simplify right side
    563,669.76x = 247,863,969,324.66
  5. Step 5: Solve for x
    x = 247,863,969,324.66/563,669.76
  6. Step 6: Final answer
    x = 439,732.60

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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.