Home / 641,028.40-961,542.60-360,509.20

Finding the Fourth Proportional to 641,028.40, 961,542.60 and 360,509.20

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Solution

The fourth proportional to 641,028.40, 961,542.60 and 360,509.20 is: 540,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,028.40 : 961,542.60 = 360,509.20 : x
  2. Step 2: Convert to fraction form
    641,028.40/961,542.60 = 360,509.20/x
  3. Step 3: Cross multiply
    641,028.40x = 961,542.60 × 360,509.20
  4. Step 4: Simplify right side
    641,028.40x = 346,644,953,491.92
  5. Step 5: Solve for x
    x = 346,644,953,491.92/641,028.40
  6. Step 6: Final answer
    x = 540,763.80

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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.