Home / 1,290,888.34-1,781,475.06-717,969.94

Finding the Fourth Proportional to 1,290,888.34, 1,781,475.06 and 717,969.94

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Solution

The fourth proportional to 1,290,888.34, 1,781,475.06 and 717,969.94 is: 990,825.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,888.34 : 1,781,475.06 = 717,969.94 : x
  2. Step 2: Convert to fraction form
    1,290,888.34/1,781,475.06 = 717,969.94/x
  3. Step 3: Cross multiply
    1,290,888.34x = 1,781,475.06 × 717,969.94
  4. Step 4: Simplify right side
    1,290,888.34x = 1,279,045,541,939.70
  5. Step 5: Solve for x
    x = 1,279,045,541,939.70/1,290,888.34
  6. Step 6: Final answer
    x = 990,825.85

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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.