Home / 1,320,335.70-1,981,159.65-521,643.30

Finding the Fourth Proportional to 1,320,335.70, 1,981,159.65 and 521,643.30

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Solution

The fourth proportional to 1,320,335.70, 1,981,159.65 and 521,643.30 is: 782,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,335.70 : 1,981,159.65 = 521,643.30 : x
  2. Step 2: Convert to fraction form
    1,320,335.70/1,981,159.65 = 521,643.30/x
  3. Step 3: Cross multiply
    1,320,335.70x = 1,981,159.65 × 521,643.30
  4. Step 4: Simplify right side
    1,320,335.70x = 1,033,458,657,652.85
  5. Step 5: Solve for x
    x = 1,033,458,657,652.85/1,320,335.70
  6. Step 6: Final answer
    x = 782,724.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.