Home / 12,409,678.02-18,614,522.56-3,890,678.78

Finding the Fourth Proportional to 12,409,678.02, 18,614,522.56 and 3,890,678.78

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Solution

The fourth proportional to 12,409,678.02, 18,614,522.56 and 3,890,678.78 is: 5,836,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409,678.02 : 18,614,522.56 = 3,890,678.78 : x
  2. Step 2: Convert to fraction form
    12,409,678.02/18,614,522.56 = 3,890,678.78/x
  3. Step 3: Cross multiply
    12,409,678.02x = 18,614,522.56 × 3,890,678.78
  4. Step 4: Simplify right side
    12,409,678.02x = 72,423,127,924,023.27
  5. Step 5: Solve for x
    x = 72,423,127,924,023.27/12,409,678.02
  6. Step 6: Final answer
    x = 5,836,019.90

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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.