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Finding the Fourth Proportional to 560,078.46, 772,954.20 and 318,436.86

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Solution

The fourth proportional to 560,078.46, 772,954.20 and 318,436.86 is: 439,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,078.46 : 772,954.20 = 318,436.86 : x
  2. Step 2: Convert to fraction form
    560,078.46/772,954.20 = 318,436.86/x
  3. Step 3: Cross multiply
    560,078.46x = 772,954.20 × 318,436.86
  4. Step 4: Simplify right side
    560,078.46x = 246,137,108,371.81
  5. Step 5: Solve for x
    x = 246,137,108,371.81/560,078.46
  6. Step 6: Final answer
    x = 439,468.98

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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.