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Finding the Fourth Proportional to 553,947.18, 763,939.72 and 363,065.82

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Solution

The fourth proportional to 553,947.18, 763,939.72 and 363,065.82 is: 500,698.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,947.18 : 763,939.72 = 363,065.82 : x
  2. Step 2: Convert to fraction form
    553,947.18/763,939.72 = 363,065.82/x
  3. Step 3: Cross multiply
    553,947.18x = 763,939.72 × 363,065.82
  4. Step 4: Simplify right side
    553,947.18x = 277,360,400,872.37
  5. Step 5: Solve for x
    x = 277,360,400,872.37/553,947.18
  6. Step 6: Final answer
    x = 500,698.28

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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.