Home / 915,317.82-1,373,205.42-645,971.87

Finding the Fourth Proportional to 915,317.82, 1,373,205.42 and 645,971.87

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Solution

The fourth proportional to 915,317.82, 1,373,205.42 and 645,971.87 is: 969,119.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,317.82 : 1,373,205.42 = 645,971.87 : x
  2. Step 2: Convert to fraction form
    915,317.82/1,373,205.42 = 645,971.87/x
  3. Step 3: Cross multiply
    915,317.82x = 1,373,205.42 × 645,971.87
  4. Step 4: Simplify right side
    915,317.82x = 887,052,063,763.11
  5. Step 5: Solve for x
    x = 887,052,063,763.11/915,317.82
  6. Step 6: Final answer
    x = 969,119.19

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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.