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Finding the Fourth Proportional to 678,498.48, 936,344.17 and 368,414.13

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Solution

The fourth proportional to 678,498.48, 936,344.17 and 368,414.13 is: 508,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,498.48 : 936,344.17 = 368,414.13 : x
  2. Step 2: Convert to fraction form
    678,498.48/936,344.17 = 368,414.13/x
  3. Step 3: Cross multiply
    678,498.48x = 936,344.17 × 368,414.13
  4. Step 4: Simplify right side
    678,498.48x = 344,962,422,771.12
  5. Step 5: Solve for x
    x = 344,962,422,771.12/678,498.48
  6. Step 6: Final answer
    x = 508,420.33

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1.5x scale

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.