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Finding the Fourth Proportional to 6,646,242.80, 9,969,364.20 and 2,158,972.40

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Solution

The fourth proportional to 6,646,242.80, 9,969,364.20 and 2,158,972.40 is: 3,238,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,646,242.80 : 9,969,364.20 = 2,158,972.40 : x
  2. Step 2: Convert to fraction form
    6,646,242.80/9,969,364.20 = 2,158,972.40/x
  3. Step 3: Cross multiply
    6,646,242.80x = 9,969,364.20 × 2,158,972.40
  4. Step 4: Simplify right side
    6,646,242.80x = 21,523,582,153,348.08
  5. Step 5: Solve for x
    x = 21,523,582,153,348.08/6,646,242.80
  6. Step 6: Final answer
    x = 3,238,458.60

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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.