Home / 1,266,859.81-1,900,289.71-320,230.53

Finding the Fourth Proportional to 1,266,859.81, 1,900,289.71 and 320,230.53

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Solution

The fourth proportional to 1,266,859.81, 1,900,289.71 and 320,230.53 is: 480,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,859.81 : 1,900,289.71 = 320,230.53 : x
  2. Step 2: Convert to fraction form
    1,266,859.81/1,900,289.71 = 320,230.53/x
  3. Step 3: Cross multiply
    1,266,859.81x = 1,900,289.71 × 320,230.53
  4. Step 4: Simplify right side
    1,266,859.81x = 608,530,777,036.70
  5. Step 5: Solve for x
    x = 608,530,777,036.70/1,266,859.81
  6. Step 6: Final answer
    x = 480,345.79

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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.