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Finding the Fourth Proportional to 553,413.39, 828,243.66 and 340,315.19

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Solution

The fourth proportional to 553,413.39, 828,243.66 and 340,315.19 is: 509,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,413.39 : 828,243.66 = 340,315.19 : x
  2. Step 2: Convert to fraction form
    553,413.39/828,243.66 = 340,315.19/x
  3. Step 3: Cross multiply
    553,413.39x = 828,243.66 × 340,315.19
  4. Step 4: Simplify right side
    553,413.39x = 281,863,894,377.98
  5. Step 5: Solve for x
    x = 281,863,894,377.98/553,413.39
  6. Step 6: Final answer
    x = 509,318.89

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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.