Home / 1,290,926.40-1,781,501.32-717,966.84

Finding the Fourth Proportional to 1,290,926.40, 1,781,501.32 and 717,966.84

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Solution

The fourth proportional to 1,290,926.40, 1,781,501.32 and 717,966.84 is: 990,806.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,926.40 : 1,781,501.32 = 717,966.84 : x
  2. Step 2: Convert to fraction form
    1,290,926.40/1,781,501.32 = 717,966.84/x
  3. Step 3: Cross multiply
    1,290,926.40x = 1,781,501.32 × 717,966.84
  4. Step 4: Simplify right side
    1,290,926.40x = 1,279,058,873,176.23
  5. Step 5: Solve for x
    x = 1,279,058,873,176.23/1,290,926.40
  6. Step 6: Final answer
    x = 990,806.97

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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.