Home / 1,138,415.20-1,707,709.20-339,634.24

Finding the Fourth Proportional to 1,138,415.20, 1,707,709.20 and 339,634.24

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Solution

The fourth proportional to 1,138,415.20, 1,707,709.20 and 339,634.24 is: 509,477.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,415.20 : 1,707,709.20 = 339,634.24 : x
  2. Step 2: Convert to fraction form
    1,138,415.20/1,707,709.20 = 339,634.24/x
  3. Step 3: Cross multiply
    1,138,415.20x = 1,707,709.20 × 339,634.24
  4. Step 4: Simplify right side
    1,138,415.20x = 579,996,516,283.01
  5. Step 5: Solve for x
    x = 579,996,516,283.01/1,138,415.20
  6. Step 6: Final answer
    x = 509,477.14

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Double scale
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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.