Home / 9,000,178.24-12,420,278.90-4,870,209.42

Finding the Fourth Proportional to 9,000,178.24, 12,420,278.90 and 4,870,209.42

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Solution

The fourth proportional to 9,000,178.24, 12,420,278.90 and 4,870,209.42 is: 6,720,906.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000,178.24 : 12,420,278.90 = 4,870,209.42 : x
  2. Step 2: Convert to fraction form
    9,000,178.24/12,420,278.90 = 4,870,209.42/x
  3. Step 3: Cross multiply
    9,000,178.24x = 12,420,278.90 × 4,870,209.42
  4. Step 4: Simplify right side
    9,000,178.24x = 60,489,359,239,663.78
  5. Step 5: Solve for x
    x = 60,489,359,239,663.78/9,000,178.24
  6. Step 6: Final answer
    x = 6,720,906.81

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1.5x scale

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.