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Finding the Fourth Proportional to 479,587.68, 662,096.16 and 288,648

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Solution

The fourth proportional to 479,587.68, 662,096.16 and 288,648 is: 398,493.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,587.68 : 662,096.16 = 288,648 : x
  2. Step 2: Convert to fraction form
    479,587.68/662,096.16 = 288,648/x
  3. Step 3: Cross multiply
    479,587.68x = 662,096.16 × 288,648
  4. Step 4: Simplify right side
    479,587.68x = 191,112,732,391.68
  5. Step 5: Solve for x
    x = 191,112,732,391.68/479,587.68
  6. Step 6: Final answer
    x = 398,493.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.