Home / 1,488,218.40-2,226,422.70-1,290,732.30

Finding the Fourth Proportional to 1,488,218.40, 2,226,422.70 and 1,290,732.30

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Solution

The fourth proportional to 1,488,218.40, 2,226,422.70 and 1,290,732.30 is: 1,930,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488,218.40 : 2,226,422.70 = 1,290,732.30 : x
  2. Step 2: Convert to fraction form
    1,488,218.40/2,226,422.70 = 1,290,732.30/x
  3. Step 3: Cross multiply
    1,488,218.40x = 2,226,422.70 × 1,290,732.30
  4. Step 4: Simplify right side
    1,488,218.40x = 2,873,715,692,343.21
  5. Step 5: Solve for x
    x = 2,873,715,692,343.21/1,488,218.40
  6. Step 6: Final answer
    x = 1,930,977.13

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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.