Home / 684,411.20-1,024,672.80-647,172.80

Finding the Fourth Proportional to 684,411.20, 1,024,672.80 and 647,172.80

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Solution

The fourth proportional to 684,411.20, 1,024,672.80 and 647,172.80 is: 968,920.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,411.20 : 1,024,672.80 = 647,172.80 : x
  2. Step 2: Convert to fraction form
    684,411.20/1,024,672.80 = 647,172.80/x
  3. Step 3: Cross multiply
    684,411.20x = 1,024,672.80 × 647,172.80
  4. Step 4: Simplify right side
    684,411.20x = 663,140,365,059.84
  5. Step 5: Solve for x
    x = 663,140,365,059.84/684,411.20
  6. Step 6: Final answer
    x = 968,920.97

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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.