Home / 930,443.81-1,395,859.39-290,721.69

Finding the Fourth Proportional to 930,443.81, 1,395,859.39 and 290,721.69

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Solution

The fourth proportional to 930,443.81, 1,395,859.39 and 290,721.69 is: 436,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,443.81 : 1,395,859.39 = 290,721.69 : x
  2. Step 2: Convert to fraction form
    930,443.81/1,395,859.39 = 290,721.69/x
  3. Step 3: Cross multiply
    930,443.81x = 1,395,859.39 × 290,721.69
  4. Step 4: Simplify right side
    930,443.81x = 405,806,600,136.37
  5. Step 5: Solve for x
    x = 405,806,600,136.37/930,443.81
  6. Step 6: Final answer
    x = 436,143.05

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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.