Home / 645,805.09-968,708.45-308,766.52

Finding the Fourth Proportional to 645,805.09, 968,708.45 and 308,766.52

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Solution

The fourth proportional to 645,805.09, 968,708.45 and 308,766.52 is: 463,150.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,805.09 : 968,708.45 = 308,766.52 : x
  2. Step 2: Convert to fraction form
    645,805.09/968,708.45 = 308,766.52/x
  3. Step 3: Cross multiply
    645,805.09x = 968,708.45 × 308,766.52
  4. Step 4: Simplify right side
    645,805.09x = 299,104,737,001.09
  5. Step 5: Solve for x
    x = 299,104,737,001.09/645,805.09
  6. Step 6: Final answer
    x = 463,150.17

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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.