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Finding the Fourth Proportional to 636,875.70, 878,890.07 and 350,413.62

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Solution

The fourth proportional to 636,875.70, 878,890.07 and 350,413.62 is: 483,571.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,875.70 : 878,890.07 = 350,413.62 : x
  2. Step 2: Convert to fraction form
    636,875.70/878,890.07 = 350,413.62/x
  3. Step 3: Cross multiply
    636,875.70x = 878,890.07 × 350,413.62
  4. Step 4: Simplify right side
    636,875.70x = 307,975,049,258.69
  5. Step 5: Solve for x
    x = 307,975,049,258.69/636,875.70
  6. Step 6: Final answer
    x = 483,571.68

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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.