Home / 690,664.80-1,036,612.56-353,934.72

Finding the Fourth Proportional to 690,664.80, 1,036,612.56 and 353,934.72

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Solution

The fourth proportional to 690,664.80, 1,036,612.56 and 353,934.72 is: 531,217.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,664.80 : 1,036,612.56 = 353,934.72 : x
  2. Step 2: Convert to fraction form
    690,664.80/1,036,612.56 = 353,934.72/x
  3. Step 3: Cross multiply
    690,664.80x = 1,036,612.56 × 353,934.72
  4. Step 4: Simplify right side
    690,664.80x = 366,893,176,172.08
  5. Step 5: Solve for x
    x = 366,893,176,172.08/690,664.80
  6. Step 6: Final answer
    x = 531,217.42

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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.