Home / 1,435,853.80-1,981,478.65-782,480.00

Finding the Fourth Proportional to 1,435,853.80, 1,981,478.65 and 782,480.00

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Solution

The fourth proportional to 1,435,853.80, 1,981,478.65 and 782,480.00 is: 1,079,822.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435,853.80 : 1,981,478.65 = 782,480.00 : x
  2. Step 2: Convert to fraction form
    1,435,853.80/1,981,478.65 = 782,480.00/x
  3. Step 3: Cross multiply
    1,435,853.80x = 1,981,478.65 × 782,480.00
  4. Step 4: Simplify right side
    1,435,853.80x = 1,550,467,412,981.47
  5. Step 5: Solve for x
    x = 1,550,467,412,981.47/1,435,853.80
  6. Step 6: Final answer
    x = 1,079,822.62

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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.