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Finding the Fourth Proportional to 662,480.49, 993,699.54 and 278,432.81

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Solution

The fourth proportional to 662,480.49, 993,699.54 and 278,432.81 is: 417,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,480.49 : 993,699.54 = 278,432.81 : x
  2. Step 2: Convert to fraction form
    662,480.49/993,699.54 = 278,432.81/x
  3. Step 3: Cross multiply
    662,480.49x = 993,699.54 × 278,432.81
  4. Step 4: Simplify right side
    662,480.49x = 276,678,550,249.41
  5. Step 5: Solve for x
    x = 276,678,550,249.41/662,480.49
  6. Step 6: Final answer
    x = 417,640.30

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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.