Home / 639,458.20-959,624.70-355,148.20

Finding the Fourth Proportional to 639,458.20, 959,624.70 and 355,148.20

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Solution

The fourth proportional to 639,458.20, 959,624.70 and 355,148.20 is: 532,965.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,458.20 : 959,624.70 = 355,148.20 : x
  2. Step 2: Convert to fraction form
    639,458.20/959,624.70 = 355,148.20/x
  3. Step 3: Cross multiply
    639,458.20x = 959,624.70 × 355,148.20
  4. Step 4: Simplify right side
    639,458.20x = 340,808,984,880.54
  5. Step 5: Solve for x
    x = 340,808,984,880.54/639,458.20
  6. Step 6: Final answer
    x = 532,965.23

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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.