Home / 921,822.80-1,379,969.40-811,230.80

Finding the Fourth Proportional to 921,822.80, 1,379,969.40 and 811,230.80

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Solution

The fourth proportional to 921,822.80, 1,379,969.40 and 811,230.80 is: 1,214,413.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,822.80 : 1,379,969.40 = 811,230.80 : x
  2. Step 2: Convert to fraction form
    921,822.80/1,379,969.40 = 811,230.80/x
  3. Step 3: Cross multiply
    921,822.80x = 1,379,969.40 × 811,230.80
  4. Step 4: Simplify right side
    921,822.80x = 1,119,473,680,337.52
  5. Step 5: Solve for x
    x = 1,119,473,680,337.52/921,822.80
  6. Step 6: Final answer
    x = 1,214,413.10

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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.