Home / 643,717.40-965,576.10-360,282.20

Finding the Fourth Proportional to 643,717.40, 965,576.10 and 360,282.20

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Solution

The fourth proportional to 643,717.40, 965,576.10 and 360,282.20 is: 540,423.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,717.40 : 965,576.10 = 360,282.20 : x
  2. Step 2: Convert to fraction form
    643,717.40/965,576.10 = 360,282.20/x
  3. Step 3: Cross multiply
    643,717.40x = 965,576.10 × 360,282.20
  4. Step 4: Simplify right side
    643,717.40x = 347,879,881,575.42
  5. Step 5: Solve for x
    x = 347,879,881,575.42/643,717.40
  6. Step 6: Final answer
    x = 540,423.30

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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.