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Finding the Fourth Proportional to 630,718.48, 945,413.28 and 314,511.08

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Solution

The fourth proportional to 630,718.48, 945,413.28 and 314,511.08 is: 471,435.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,718.48 : 945,413.28 = 314,511.08 : x
  2. Step 2: Convert to fraction form
    630,718.48/945,413.28 = 314,511.08/x
  3. Step 3: Cross multiply
    630,718.48x = 945,413.28 × 314,511.08
  4. Step 4: Simplify right side
    630,718.48x = 297,342,951,739.14
  5. Step 5: Solve for x
    x = 297,342,951,739.14/630,718.48
  6. Step 6: Final answer
    x = 471,435.29

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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.