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Finding the Fourth Proportional to 988,798.86, 1,483,200.72 and 278,830.62

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Solution

The fourth proportional to 988,798.86, 1,483,200.72 and 278,830.62 is: 418,246.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,798.86 : 1,483,200.72 = 278,830.62 : x
  2. Step 2: Convert to fraction form
    988,798.86/1,483,200.72 = 278,830.62/x
  3. Step 3: Cross multiply
    988,798.86x = 1,483,200.72 × 278,830.62
  4. Step 4: Simplify right side
    988,798.86x = 413,561,776,342.05
  5. Step 5: Solve for x
    x = 413,561,776,342.05/988,798.86
  6. Step 6: Final answer
    x = 418,246.62

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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.