Home / 1,290,924.40-1,781,498.56-717,964.84

Finding the Fourth Proportional to 1,290,924.40, 1,781,498.56 and 717,964.84

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Solution

The fourth proportional to 1,290,924.40, 1,781,498.56 and 717,964.84 is: 990,804.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,924.40 : 1,781,498.56 = 717,964.84 : x
  2. Step 2: Convert to fraction form
    1,290,924.40/1,781,498.56 = 717,964.84/x
  3. Step 3: Cross multiply
    1,290,924.40x = 1,781,498.56 × 717,964.84
  4. Step 4: Simplify right side
    1,290,924.40x = 1,279,053,328,590.63
  5. Step 5: Solve for x
    x = 1,279,053,328,590.63/1,290,924.40
  6. Step 6: Final answer
    x = 990,804.21

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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.