Home / 1,438,625.20-2,154,827.40-1,281,031.60

Finding the Fourth Proportional to 1,438,625.20, 2,154,827.40 and 1,281,031.60

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Solution

The fourth proportional to 1,438,625.20, 2,154,827.40 and 1,281,031.60 is: 1,918,777.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,625.20 : 2,154,827.40 = 1,281,031.60 : x
  2. Step 2: Convert to fraction form
    1,438,625.20/2,154,827.40 = 1,281,031.60/x
  3. Step 3: Cross multiply
    1,438,625.20x = 2,154,827.40 × 1,281,031.60
  4. Step 4: Simplify right side
    1,438,625.20x = 2,760,401,991,945.84
  5. Step 5: Solve for x
    x = 2,760,401,991,945.84/1,438,625.20
  6. Step 6: Final answer
    x = 1,918,777.73

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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.