Home / 1,290,931.76-1,781,548.83-717,959.63

Finding the Fourth Proportional to 1,290,931.76, 1,781,548.83 and 717,959.63

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Solution

The fourth proportional to 1,290,931.76, 1,781,548.83 and 717,959.63 is: 990,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,931.76 : 1,781,548.83 = 717,959.63 : x
  2. Step 2: Convert to fraction form
    1,290,931.76/1,781,548.83 = 717,959.63/x
  3. Step 3: Cross multiply
    1,290,931.76x = 1,781,548.83 × 717,959.63
  4. Step 4: Simplify right side
    1,290,931.76x = 1,279,080,143,267.61
  5. Step 5: Solve for x
    x = 1,279,080,143,267.61/1,290,931.76
  6. Step 6: Final answer
    x = 990,819.33

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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.