Home / 1,290,913.39-1,781,483.39-717,953.82

Finding the Fourth Proportional to 1,290,913.39, 1,781,483.39 and 717,953.82

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Solution

The fourth proportional to 1,290,913.39, 1,781,483.39 and 717,953.82 is: 990,789.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,913.39 : 1,781,483.39 = 717,953.82 : x
  2. Step 2: Convert to fraction form
    1,290,913.39/1,781,483.39 = 717,953.82/x
  3. Step 3: Cross multiply
    1,290,913.39x = 1,781,483.39 × 717,953.82
  4. Step 4: Simplify right side
    1,290,913.39x = 1,279,022,805,117.05
  5. Step 5: Solve for x
    x = 1,279,022,805,117.05/1,290,913.39
  6. Step 6: Final answer
    x = 990,789.01

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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.