Home / 1,240,735.80-1,861,103.70-492,781.80

Finding the Fourth Proportional to 1,240,735.80, 1,861,103.70 and 492,781.80

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Solution

The fourth proportional to 1,240,735.80, 1,861,103.70 and 492,781.80 is: 739,172.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,735.80 : 1,861,103.70 = 492,781.80 : x
  2. Step 2: Convert to fraction form
    1,240,735.80/1,861,103.70 = 492,781.80/x
  3. Step 3: Cross multiply
    1,240,735.80x = 1,861,103.70 × 492,781.80
  4. Step 4: Simplify right side
    1,240,735.80x = 917,118,031,272.66
  5. Step 5: Solve for x
    x = 917,118,031,272.66/1,240,735.80
  6. Step 6: Final answer
    x = 739,172.70

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Double scale
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Similar ratio
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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.