Home / 690,719.69-952,940.35-418,591.28

Finding the Fourth Proportional to 690,719.69, 952,940.35 and 418,591.28

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Solution

The fourth proportional to 690,719.69, 952,940.35 and 418,591.28 is: 577,502.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,719.69 : 952,940.35 = 418,591.28 : x
  2. Step 2: Convert to fraction form
    690,719.69/952,940.35 = 418,591.28/x
  3. Step 3: Cross multiply
    690,719.69x = 952,940.35 × 418,591.28
  4. Step 4: Simplify right side
    690,719.69x = 398,892,520,870.15
  5. Step 5: Solve for x
    x = 398,892,520,870.15/690,719.69
  6. Step 6: Final answer
    x = 577,502.75

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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.