Home / 961,515.40-1,442,509.26-330,438.28

Finding the Fourth Proportional to 961,515.40, 1,442,509.26 and 330,438.28

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Solution

The fourth proportional to 961,515.40, 1,442,509.26 and 330,438.28 is: 495,738.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,515.40 : 1,442,509.26 = 330,438.28 : x
  2. Step 2: Convert to fraction form
    961,515.40/1,442,509.26 = 330,438.28/x
  3. Step 3: Cross multiply
    961,515.40x = 1,442,509.26 × 330,438.28
  4. Step 4: Simplify right side
    961,515.40x = 476,660,278,758.47
  5. Step 5: Solve for x
    x = 476,660,278,758.47/961,515.40
  6. Step 6: Final answer
    x = 495,738.58

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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.