Home / 1,382,930-2,074,745.40-385,658

Finding the Fourth Proportional to 1,382,930, 2,074,745.40 and 385,658

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Solution

The fourth proportional to 1,382,930, 2,074,745.40 and 385,658 is: 578,584.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,930 : 2,074,745.40 = 385,658 : x
  2. Step 2: Convert to fraction form
    1,382,930/2,074,745.40 = 385,658/x
  3. Step 3: Cross multiply
    1,382,930x = 2,074,745.40 × 385,658
  4. Step 4: Simplify right side
    1,382,930x = 800,142,161,473.20
  5. Step 5: Solve for x
    x = 800,142,161,473.20/1,382,930
  6. Step 6: Final answer
    x = 578,584.72

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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.