Home / 636,786.55-878,747.05-350,306.71

Finding the Fourth Proportional to 636,786.55, 878,747.05 and 350,306.71

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Solution

The fourth proportional to 636,786.55, 878,747.05 and 350,306.71 is: 483,413.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,786.55 : 878,747.05 = 350,306.71 : x
  2. Step 2: Convert to fraction form
    636,786.55/878,747.05 = 350,306.71/x
  3. Step 3: Cross multiply
    636,786.55x = 878,747.05 × 350,306.71
  4. Step 4: Simplify right side
    636,786.55x = 307,830,988,007.71
  5. Step 5: Solve for x
    x = 307,830,988,007.71/636,786.55
  6. Step 6: Final answer
    x = 483,413.14

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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.