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Finding the Fourth Proportional to 810,012.80, 1,212,394.80 and 573,816.80

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Solution

The fourth proportional to 810,012.80, 1,212,394.80 and 573,816.80 is: 858,866.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,012.80 : 1,212,394.80 = 573,816.80 : x
  2. Step 2: Convert to fraction form
    810,012.80/1,212,394.80 = 573,816.80/x
  3. Step 3: Cross multiply
    810,012.80x = 1,212,394.80 × 573,816.80
  4. Step 4: Simplify right side
    810,012.80x = 695,692,504,472.64
  5. Step 5: Solve for x
    x = 695,692,504,472.64/810,012.80
  6. Step 6: Final answer
    x = 858,866.06

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Double scale
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1.5x scale

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.