Home / 640,308.47-960,428.07-324,757.17

Finding the Fourth Proportional to 640,308.47, 960,428.07 and 324,757.17

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Solution

The fourth proportional to 640,308.47, 960,428.07 and 324,757.17 is: 487,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,308.47 : 960,428.07 = 324,757.17 : x
  2. Step 2: Convert to fraction form
    640,308.47/960,428.07 = 324,757.17/x
  3. Step 3: Cross multiply
    640,308.47x = 960,428.07 × 324,757.17
  4. Step 4: Simplify right side
    640,308.47x = 311,905,902,001.76
  5. Step 5: Solve for x
    x = 311,905,902,001.76/640,308.47
  6. Step 6: Final answer
    x = 487,118.19

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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.