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Finding the Fourth Proportional to 472,413.38, 651,529.39 and 399,184.57

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Solution

The fourth proportional to 472,413.38, 651,529.39 and 399,184.57 is: 550,535.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,413.38 : 651,529.39 = 399,184.57 : x
  2. Step 2: Convert to fraction form
    472,413.38/651,529.39 = 399,184.57/x
  3. Step 3: Cross multiply
    472,413.38x = 651,529.39 × 399,184.57
  4. Step 4: Simplify right side
    472,413.38x = 260,080,474,135.94
  5. Step 5: Solve for x
    x = 260,080,474,135.94/472,413.38
  6. Step 6: Final answer
    x = 550,535.79

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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.