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Finding the Fourth Proportional to 807,648.60, 1,210,014.90 and 470,413.20

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Solution

The fourth proportional to 807,648.60, 1,210,014.90 and 470,413.20 is: 704,770.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,648.60 : 1,210,014.90 = 470,413.20 : x
  2. Step 2: Convert to fraction form
    807,648.60/1,210,014.90 = 470,413.20/x
  3. Step 3: Cross multiply
    807,648.60x = 1,210,014.90 × 470,413.20
  4. Step 4: Simplify right side
    807,648.60x = 569,206,981,156.68
  5. Step 5: Solve for x
    x = 569,206,981,156.68/807,648.60
  6. Step 6: Final answer
    x = 704,770.59

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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.