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Finding the Fourth Proportional to 1,479,808.40, 2,220,749.40 and 948,621.20

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Solution

The fourth proportional to 1,479,808.40, 2,220,749.40 and 948,621.20 is: 1,423,596.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479,808.40 : 2,220,749.40 = 948,621.20 : x
  2. Step 2: Convert to fraction form
    1,479,808.40/2,220,749.40 = 948,621.20/x
  3. Step 3: Cross multiply
    1,479,808.40x = 2,220,749.40 × 948,621.20
  4. Step 4: Simplify right side
    1,479,808.40x = 2,106,649,960,727.28
  5. Step 5: Solve for x
    x = 2,106,649,960,727.28/1,479,808.40
  6. Step 6: Final answer
    x = 1,423,596.43

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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.