Home / 1,290,926.20-1,781,541.27-717,954.07

Finding the Fourth Proportional to 1,290,926.20, 1,781,541.27 and 717,954.07

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Solution

The fourth proportional to 1,290,926.20, 1,781,541.27 and 717,954.07 is: 990,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,926.20 : 1,781,541.27 = 717,954.07 : x
  2. Step 2: Convert to fraction form
    1,290,926.20/1,781,541.27 = 717,954.07/x
  3. Step 3: Cross multiply
    1,290,926.20x = 1,781,541.27 × 717,954.07
  4. Step 4: Simplify right side
    1,290,926.20x = 1,279,064,805,669.47
  5. Step 5: Solve for x
    x = 1,279,064,805,669.47/1,290,926.20
  6. Step 6: Final answer
    x = 990,811.72

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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.