Home / 641,975.73-885,839.62-355,488.45

Finding the Fourth Proportional to 641,975.73, 885,839.62 and 355,488.45

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Solution

The fourth proportional to 641,975.73, 885,839.62 and 355,488.45 is: 490,525.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,975.73 : 885,839.62 = 355,488.45 : x
  2. Step 2: Convert to fraction form
    641,975.73/885,839.62 = 355,488.45/x
  3. Step 3: Cross multiply
    641,975.73x = 885,839.62 × 355,488.45
  4. Step 4: Simplify right side
    641,975.73x = 314,905,753,462.39
  5. Step 5: Solve for x
    x = 314,905,753,462.39/641,975.73
  6. Step 6: Final answer
    x = 490,525.95

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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.