Home / 1,019,500.24-1,529,434.23-420,127.78

Finding the Fourth Proportional to 1,019,500.24, 1,529,434.23 and 420,127.78

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Solution

The fourth proportional to 1,019,500.24, 1,529,434.23 and 420,127.78 is: 630,267.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019,500.24 : 1,529,434.23 = 420,127.78 : x
  2. Step 2: Convert to fraction form
    1,019,500.24/1,529,434.23 = 420,127.78/x
  3. Step 3: Cross multiply
    1,019,500.24x = 1,529,434.23 × 420,127.78
  4. Step 4: Simplify right side
    1,019,500.24x = 642,557,807,705.91
  5. Step 5: Solve for x
    x = 642,557,807,705.91/1,019,500.24
  6. Step 6: Final answer
    x = 630,267.44

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Double scale
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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.