Home / 1,389,743.70-2,084,615.55-491,178.30

Finding the Fourth Proportional to 1,389,743.70, 2,084,615.55 and 491,178.30

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Solution

The fourth proportional to 1,389,743.70, 2,084,615.55 and 491,178.30 is: 736,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,743.70 : 2,084,615.55 = 491,178.30 : x
  2. Step 2: Convert to fraction form
    1,389,743.70/2,084,615.55 = 491,178.30/x
  3. Step 3: Cross multiply
    1,389,743.70x = 2,084,615.55 × 491,178.30
  4. Step 4: Simplify right side
    1,389,743.70x = 1,023,917,922,002.57
  5. Step 5: Solve for x
    x = 1,023,917,922,002.57/1,389,743.70
  6. Step 6: Final answer
    x = 736,767.45

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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.