Home / 808,340.20-1,212,510.30-509,158.60

Finding the Fourth Proportional to 808,340.20, 1,212,510.30 and 509,158.60

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Solution

The fourth proportional to 808,340.20, 1,212,510.30 and 509,158.60 is: 763,737.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,340.20 : 1,212,510.30 = 509,158.60 : x
  2. Step 2: Convert to fraction form
    808,340.20/1,212,510.30 = 509,158.60/x
  3. Step 3: Cross multiply
    808,340.20x = 1,212,510.30 × 509,158.60
  4. Step 4: Simplify right side
    808,340.20x = 617,360,046,833.58
  5. Step 5: Solve for x
    x = 617,360,046,833.58/808,340.20
  6. Step 6: Final answer
    x = 763,737.90

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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.