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Finding the Fourth Proportional to 666,413.40, 998,064.90 and 653,050.20

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Solution

The fourth proportional to 666,413.40, 998,064.90 and 653,050.20 is: 978,051.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,413.40 : 998,064.90 = 653,050.20 : x
  2. Step 2: Convert to fraction form
    666,413.40/998,064.90 = 653,050.20/x
  3. Step 3: Cross multiply
    666,413.40x = 998,064.90 × 653,050.20
  4. Step 4: Simplify right side
    666,413.40x = 651,786,482,557.98
  5. Step 5: Solve for x
    x = 651,786,482,557.98/666,413.40
  6. Step 6: Final answer
    x = 978,051.29

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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.