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Finding the Fourth Proportional to 520,025.70, 780,038.55 and 204,492.90

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Solution

The fourth proportional to 520,025.70, 780,038.55 and 204,492.90 is: 306,739.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,025.70 : 780,038.55 = 204,492.90 : x
  2. Step 2: Convert to fraction form
    520,025.70/780,038.55 = 204,492.90/x
  3. Step 3: Cross multiply
    520,025.70x = 780,038.55 × 204,492.90
  4. Step 4: Simplify right side
    520,025.70x = 159,512,345,201.30
  5. Step 5: Solve for x
    x = 159,512,345,201.30/520,025.70
  6. Step 6: Final answer
    x = 306,739.35

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Similar ratio
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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.