Home / 915,783.30-1,263,858.59-508,016.51

Finding the Fourth Proportional to 915,783.30, 1,263,858.59 and 508,016.51

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Solution

The fourth proportional to 915,783.30, 1,263,858.59 and 508,016.51 is: 701,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,783.30 : 1,263,858.59 = 508,016.51 : x
  2. Step 2: Convert to fraction form
    915,783.30/1,263,858.59 = 508,016.51/x
  3. Step 3: Cross multiply
    915,783.30x = 1,263,858.59 × 508,016.51
  4. Step 4: Simplify right side
    915,783.30x = 642,061,029,715.54
  5. Step 5: Solve for x
    x = 642,061,029,715.54/915,783.30
  6. Step 6: Final answer
    x = 701,105.85

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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.