Home / 915,786.20-1,263,862.60-508,019.45

Finding the Fourth Proportional to 915,786.20, 1,263,862.60 and 508,019.45

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Solution

The fourth proportional to 915,786.20, 1,263,862.60 and 508,019.45 is: 701,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,786.20 : 1,263,862.60 = 508,019.45 : x
  2. Step 2: Convert to fraction form
    915,786.20/1,263,862.60 = 508,019.45/x
  3. Step 3: Cross multiply
    915,786.20x = 1,263,862.60 × 508,019.45
  4. Step 4: Simplify right side
    915,786.20x = 642,066,775,338.21
  5. Step 5: Solve for x
    x = 642,066,775,338.21/915,786.20
  6. Step 6: Final answer
    x = 701,109.90

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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.