Home / 811,271.30-1,119,537.45-505,193.36

Finding the Fourth Proportional to 811,271.30, 1,119,537.45 and 505,193.36

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Solution

The fourth proportional to 811,271.30, 1,119,537.45 and 505,193.36 is: 697,156.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,271.30 : 1,119,537.45 = 505,193.36 : x
  2. Step 2: Convert to fraction form
    811,271.30/1,119,537.45 = 505,193.36/x
  3. Step 3: Cross multiply
    811,271.30x = 1,119,537.45 × 505,193.36
  4. Step 4: Simplify right side
    811,271.30x = 565,582,880,413.65
  5. Step 5: Solve for x
    x = 565,582,880,413.65/811,271.30
  6. Step 6: Final answer
    x = 697,156.28

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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.