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Finding the Fourth Proportional to 647,002.20, 971,378.10 and 410,806.20

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Solution

The fourth proportional to 647,002.20, 971,378.10 and 410,806.20 is: 616,764.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,002.20 : 971,378.10 = 410,806.20 : x
  2. Step 2: Convert to fraction form
    647,002.20/971,378.10 = 410,806.20/x
  3. Step 3: Cross multiply
    647,002.20x = 971,378.10 × 410,806.20
  4. Step 4: Simplify right side
    647,002.20x = 399,048,146,024.22
  5. Step 5: Solve for x
    x = 399,048,146,024.22/647,002.20
  6. Step 6: Final answer
    x = 616,764.74

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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.