Home / 2,890,148.78-3,988,404.70-1,583,447.20

Finding the Fourth Proportional to 2,890,148.78, 3,988,404.70 and 1,583,447.20

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Solution

The fourth proportional to 2,890,148.78, 3,988,404.70 and 1,583,447.20 is: 2,185,156.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890,148.78 : 3,988,404.70 = 1,583,447.20 : x
  2. Step 2: Convert to fraction form
    2,890,148.78/3,988,404.70 = 1,583,447.20/x
  3. Step 3: Cross multiply
    2,890,148.78x = 3,988,404.70 × 1,583,447.20
  4. Step 4: Simplify right side
    2,890,148.78x = 6,315,428,240,752.21
  5. Step 5: Solve for x
    x = 6,315,428,240,752.21/2,890,148.78
  6. Step 6: Final answer
    x = 2,185,156.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.