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Finding the Fourth Proportional to 988,249, 1,482,242.46 and 278,332.84

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Solution

The fourth proportional to 988,249, 1,482,242.46 and 278,332.84 is: 417,462.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,249 : 1,482,242.46 = 278,332.84 : x
  2. Step 2: Convert to fraction form
    988,249/1,482,242.46 = 278,332.84/x
  3. Step 3: Cross multiply
    988,249x = 1,482,242.46 × 278,332.84
  4. Step 4: Simplify right side
    988,249x = 412,556,753,460.39
  5. Step 5: Solve for x
    x = 412,556,753,460.39/988,249
  6. Step 6: Final answer
    x = 417,462.35

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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.