Home / 566,396.40-781,621.02-311,742.12

Finding the Fourth Proportional to 566,396.40, 781,621.02 and 311,742.12

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Solution

The fourth proportional to 566,396.40, 781,621.02 and 311,742.12 is: 430,200.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,396.40 : 781,621.02 = 311,742.12 : x
  2. Step 2: Convert to fraction form
    566,396.40/781,621.02 = 311,742.12/x
  3. Step 3: Cross multiply
    566,396.40x = 781,621.02 × 311,742.12
  4. Step 4: Simplify right side
    566,396.40x = 243,664,193,811.36
  5. Step 5: Solve for x
    x = 243,664,193,811.36/566,396.40
  6. Step 6: Final answer
    x = 430,200.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.