Home / 690,214.38-952,486.80-399,865.52

Finding the Fourth Proportional to 690,214.38, 952,486.80 and 399,865.52

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Solution

The fourth proportional to 690,214.38, 952,486.80 and 399,865.52 is: 551,809.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,214.38 : 952,486.80 = 399,865.52 : x
  2. Step 2: Convert to fraction form
    690,214.38/952,486.80 = 399,865.52/x
  3. Step 3: Cross multiply
    690,214.38x = 952,486.80 × 399,865.52
  4. Step 4: Simplify right side
    690,214.38x = 380,866,624,812.70
  5. Step 5: Solve for x
    x = 380,866,624,812.70/690,214.38
  6. Step 6: Final answer
    x = 551,809.17

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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.