Home / 902,761.20-1,245,943.08-520,713.36

Finding the Fourth Proportional to 902,761.20, 1,245,943.08 and 520,713.36

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Solution

The fourth proportional to 902,761.20, 1,245,943.08 and 520,713.36 is: 718,660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,761.20 : 1,245,943.08 = 520,713.36 : x
  2. Step 2: Convert to fraction form
    902,761.20/1,245,943.08 = 520,713.36/x
  3. Step 3: Cross multiply
    902,761.20x = 1,245,943.08 × 520,713.36
  4. Step 4: Simplify right side
    902,761.20x = 648,779,207,555.55
  5. Step 5: Solve for x
    x = 648,779,207,555.55/902,761.20
  6. Step 6: Final answer
    x = 718,660.93

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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.