Home / 385,413.48-577,976.70-132,623.40

Finding the Fourth Proportional to 385,413.48, 577,976.70 and 132,623.40

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Solution

The fourth proportional to 385,413.48, 577,976.70 and 132,623.40 is: 198,885.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,413.48 : 577,976.70 = 132,623.40 : x
  2. Step 2: Convert to fraction form
    385,413.48/577,976.70 = 132,623.40/x
  3. Step 3: Cross multiply
    385,413.48x = 577,976.70 × 132,623.40
  4. Step 4: Simplify right side
    385,413.48x = 76,653,235,074.78
  5. Step 5: Solve for x
    x = 76,653,235,074.78/385,413.48
  6. Step 6: Final answer
    x = 198,885.71

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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.