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Finding the Fourth Proportional to 553,622.65, 763,999.25 and 298,973.82

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Solution

The fourth proportional to 553,622.65, 763,999.25 and 298,973.82 is: 412,583.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,622.65 : 763,999.25 = 298,973.82 : x
  2. Step 2: Convert to fraction form
    553,622.65/763,999.25 = 298,973.82/x
  3. Step 3: Cross multiply
    553,622.65x = 763,999.25 × 298,973.82
  4. Step 4: Simplify right side
    553,622.65x = 228,415,774,249.64
  5. Step 5: Solve for x
    x = 228,415,774,249.64/553,622.65
  6. Step 6: Final answer
    x = 412,583.87

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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.