Home / 989,876.80-1,484,815.20-823,988.80

Finding the Fourth Proportional to 989,876.80, 1,484,815.20 and 823,988.80

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Solution

The fourth proportional to 989,876.80, 1,484,815.20 and 823,988.80 is: 1,235,983.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,876.80 : 1,484,815.20 = 823,988.80 : x
  2. Step 2: Convert to fraction form
    989,876.80/1,484,815.20 = 823,988.80/x
  3. Step 3: Cross multiply
    989,876.80x = 1,484,815.20 × 823,988.80
  4. Step 4: Simplify right side
    989,876.80x = 1,223,471,094,869.76
  5. Step 5: Solve for x
    x = 1,223,471,094,869.76/989,876.80
  6. Step 6: Final answer
    x = 1,235,983.20

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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.