Home / 961,421.70-1,442,132.55-400,383.30

Finding the Fourth Proportional to 961,421.70, 1,442,132.55 and 400,383.30

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Solution

The fourth proportional to 961,421.70, 1,442,132.55 and 400,383.30 is: 600,574.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,421.70 : 1,442,132.55 = 400,383.30 : x
  2. Step 2: Convert to fraction form
    961,421.70/1,442,132.55 = 400,383.30/x
  3. Step 3: Cross multiply
    961,421.70x = 1,442,132.55 × 400,383.30
  4. Step 4: Simplify right side
    961,421.70x = 577,405,789,406.42
  5. Step 5: Solve for x
    x = 577,405,789,406.42/961,421.70
  6. Step 6: Final answer
    x = 600,574.95

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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.