Home / 915,781.65-1,263,856.30-508,014.87

Finding the Fourth Proportional to 915,781.65, 1,263,856.30 and 508,014.87

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Solution

The fourth proportional to 915,781.65, 1,263,856.30 and 508,014.87 is: 701,103.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,781.65 : 1,263,856.30 = 508,014.87 : x
  2. Step 2: Convert to fraction form
    915,781.65/1,263,856.30 = 508,014.87/x
  3. Step 3: Cross multiply
    915,781.65x = 1,263,856.30 × 508,014.87
  4. Step 4: Simplify right side
    915,781.65x = 642,057,792,673.14
  5. Step 5: Solve for x
    x = 642,057,792,673.14/915,781.65
  6. Step 6: Final answer
    x = 701,103.58

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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.