Home / 1,161,414.90-1,603,008.72-645,346.11

Finding the Fourth Proportional to 1,161,414.90, 1,603,008.72 and 645,346.11

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Solution

The fourth proportional to 1,161,414.90, 1,603,008.72 and 645,346.11 is: 890,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161,414.90 : 1,603,008.72 = 645,346.11 : x
  2. Step 2: Convert to fraction form
    1,161,414.90/1,603,008.72 = 645,346.11/x
  3. Step 3: Cross multiply
    1,161,414.90x = 1,603,008.72 × 645,346.11
  4. Step 4: Simplify right side
    1,161,414.90x = 1,034,495,441,748.08
  5. Step 5: Solve for x
    x = 1,034,495,441,748.08/1,161,414.90
  6. Step 6: Final answer
    x = 890,719.97

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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.