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Finding the Fourth Proportional to 6,409,927.80, 9,614,891.70 and 2,149,068.60

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Solution

The fourth proportional to 6,409,927.80, 9,614,891.70 and 2,149,068.60 is: 3,223,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,409,927.80 : 9,614,891.70 = 2,149,068.60 : x
  2. Step 2: Convert to fraction form
    6,409,927.80/9,614,891.70 = 2,149,068.60/x
  3. Step 3: Cross multiply
    6,409,927.80x = 9,614,891.70 × 2,149,068.60
  4. Step 4: Simplify right side
    6,409,927.80x = 20,663,061,844,870.62
  5. Step 5: Solve for x
    x = 20,663,061,844,870.62/6,409,927.80
  6. Step 6: Final answer
    x = 3,223,602.90

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1.5x scale

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.