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Finding the Fourth Proportional to 723,413.08, 998,322 and 401,136.76

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Solution

The fourth proportional to 723,413.08, 998,322 and 401,136.76 is: 553,575.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,413.08 : 998,322 = 401,136.76 : x
  2. Step 2: Convert to fraction form
    723,413.08/998,322 = 401,136.76/x
  3. Step 3: Cross multiply
    723,413.08x = 998,322 × 401,136.76
  4. Step 4: Simplify right side
    723,413.08x = 400,463,652,516.72
  5. Step 5: Solve for x
    x = 400,463,652,516.72/723,413.08
  6. Step 6: Final answer
    x = 553,575.35

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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.