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Finding the Fourth Proportional to 630,413.69, 869,967.03 and 358,481.80

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Solution

The fourth proportional to 630,413.69, 869,967.03 and 358,481.80 is: 494,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,413.69 : 869,967.03 = 358,481.80 : x
  2. Step 2: Convert to fraction form
    630,413.69/869,967.03 = 358,481.80/x
  3. Step 3: Cross multiply
    630,413.69x = 869,967.03 × 358,481.80
  4. Step 4: Simplify right side
    630,413.69x = 311,867,349,286.82
  5. Step 5: Solve for x
    x = 311,867,349,286.82/630,413.69
  6. Step 6: Final answer
    x = 494,702.70

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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.