Home / 988,986.60-1,483,479.90-279,005.40

Finding the Fourth Proportional to 988,986.60, 1,483,479.90 and 279,005.40

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Solution

The fourth proportional to 988,986.60, 1,483,479.90 and 279,005.40 is: 418,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,986.60 : 1,483,479.90 = 279,005.40 : x
  2. Step 2: Convert to fraction form
    988,986.60/1,483,479.90 = 279,005.40/x
  3. Step 3: Cross multiply
    988,986.60x = 1,483,479.90 × 279,005.40
  4. Step 4: Simplify right side
    988,986.60x = 413,898,902,891.46
  5. Step 5: Solve for x
    x = 413,898,902,891.46/988,986.60
  6. Step 6: Final answer
    x = 418,508.10

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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.