Home / 989,620.29-1,484,490.42-279,701.46

Finding the Fourth Proportional to 989,620.29, 1,484,490.42 and 279,701.46

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Solution

The fourth proportional to 989,620.29, 1,484,490.42 and 279,701.46 is: 419,569.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,620.29 : 1,484,490.42 = 279,701.46 : x
  2. Step 2: Convert to fraction form
    989,620.29/1,484,490.42 = 279,701.46/x
  3. Step 3: Cross multiply
    989,620.29x = 1,484,490.42 × 279,701.46
  4. Step 4: Simplify right side
    989,620.29x = 415,214,137,830.01
  5. Step 5: Solve for x
    x = 415,214,137,830.01/989,620.29
  6. Step 6: Final answer
    x = 419,569.14

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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.