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Finding the Fourth Proportional to 520,017.10, 780,112.05 and 204,484.30

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Solution

The fourth proportional to 520,017.10, 780,112.05 and 204,484.30 is: 306,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,017.10 : 780,112.05 = 204,484.30 : x
  2. Step 2: Convert to fraction form
    520,017.10/780,112.05 = 204,484.30/x
  3. Step 3: Cross multiply
    520,017.10x = 780,112.05 × 204,484.30
  4. Step 4: Simplify right side
    520,017.10x = 159,520,666,465.82
  5. Step 5: Solve for x
    x = 159,520,666,465.82/520,017.10
  6. Step 6: Final answer
    x = 306,760.42

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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.