Home / 915,317.39-1,373,204.76-645,971.43

Finding the Fourth Proportional to 915,317.39, 1,373,204.76 and 645,971.43

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Solution

The fourth proportional to 915,317.39, 1,373,204.76 and 645,971.43 is: 969,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,317.39 : 1,373,204.76 = 645,971.43 : x
  2. Step 2: Convert to fraction form
    915,317.39/1,373,204.76 = 645,971.43/x
  3. Step 3: Cross multiply
    915,317.39x = 1,373,204.76 × 645,971.43
  4. Step 4: Simplify right side
    915,317.39x = 887,051,035,633.98
  5. Step 5: Solve for x
    x = 887,051,035,633.98/915,317.39
  6. Step 6: Final answer
    x = 969,118.53

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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.