Home / 690,745-1,036,069.98-424,546.60

Finding the Fourth Proportional to 690,745, 1,036,069.98 and 424,546.60

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Solution

The fourth proportional to 690,745, 1,036,069.98 and 424,546.60 is: 636,790.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,745 : 1,036,069.98 = 424,546.60 : x
  2. Step 2: Convert to fraction form
    690,745/1,036,069.98 = 424,546.60/x
  3. Step 3: Cross multiply
    690,745x = 1,036,069.98 × 424,546.60
  4. Step 4: Simplify right side
    690,745x = 439,859,987,371.07
  5. Step 5: Solve for x
    x = 439,859,987,371.07/690,745
  6. Step 6: Final answer
    x = 636,790.69

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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.