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Finding the Fourth Proportional to 553,627.52, 764,005.98 and 298,978.70

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Solution

The fourth proportional to 553,627.52, 764,005.98 and 298,978.70 is: 412,590.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,627.52 : 764,005.98 = 298,978.70 : x
  2. Step 2: Convert to fraction form
    553,627.52/764,005.98 = 298,978.70/x
  3. Step 3: Cross multiply
    553,627.52x = 764,005.98 × 298,978.70
  4. Step 4: Simplify right side
    553,627.52x = 228,421,514,692.63
  5. Step 5: Solve for x
    x = 228,421,514,692.63/553,627.52
  6. Step 6: Final answer
    x = 412,590.61

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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.