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Finding the Fourth Proportional to 520,155.60, 780,427.80 and 204,832.32

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Solution

The fourth proportional to 520,155.60, 780,427.80 and 204,832.32 is: 307,325.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,155.60 : 780,427.80 = 204,832.32 : x
  2. Step 2: Convert to fraction form
    520,155.60/780,427.80 = 204,832.32/x
  3. Step 3: Cross multiply
    520,155.60x = 780,427.80 × 204,832.32
  4. Step 4: Simplify right side
    520,155.60x = 159,856,836,866.50
  5. Step 5: Solve for x
    x = 159,856,836,866.50/520,155.60
  6. Step 6: Final answer
    x = 307,325.03

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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.