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Finding the Fourth Proportional to 553,249.47, 763,557.03 and 311,579.29

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Solution

The fourth proportional to 553,249.47, 763,557.03 and 311,579.29 is: 430,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,249.47 : 763,557.03 = 311,579.29 : x
  2. Step 2: Convert to fraction form
    553,249.47/763,557.03 = 311,579.29/x
  3. Step 3: Cross multiply
    553,249.47x = 763,557.03 × 311,579.29
  4. Step 4: Simplify right side
    553,249.47x = 237,908,558,236.36
  5. Step 5: Solve for x
    x = 237,908,558,236.36/553,249.47
  6. Step 6: Final answer
    x = 430,020.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.