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Finding the Fourth Proportional to 522,413.62, 783,621.27 and 143,339.56

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Solution

The fourth proportional to 522,413.62, 783,621.27 and 143,339.56 is: 215,009.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,413.62 : 783,621.27 = 143,339.56 : x
  2. Step 2: Convert to fraction form
    522,413.62/783,621.27 = 143,339.56/x
  3. Step 3: Cross multiply
    522,413.62x = 783,621.27 × 143,339.56
  4. Step 4: Simplify right side
    522,413.62x = 112,323,926,089.39
  5. Step 5: Solve for x
    x = 112,323,926,089.39/522,413.62
  6. Step 6: Final answer
    x = 215,009.57

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1.5x scale

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.