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Finding the Fourth Proportional to 518,885.52, 777,949.20 and 349,985.76

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Solution

The fourth proportional to 518,885.52, 777,949.20 and 349,985.76 is: 524,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,885.52 : 777,949.20 = 349,985.76 : x
  2. Step 2: Convert to fraction form
    518,885.52/777,949.20 = 349,985.76/x
  3. Step 3: Cross multiply
    518,885.52x = 777,949.20 × 349,985.76
  4. Step 4: Simplify right side
    518,885.52x = 272,271,142,003.39
  5. Step 5: Solve for x
    x = 272,271,142,003.39/518,885.52
  6. Step 6: Final answer
    x = 524,722.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.