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Finding the Fourth Proportional to 744,897.78, 1,027,887.78 and 418,135.95

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Solution

The fourth proportional to 744,897.78, 1,027,887.78 and 418,135.95 is: 576,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,897.78 : 1,027,887.78 = 418,135.95 : x
  2. Step 2: Convert to fraction form
    744,897.78/1,027,887.78 = 418,135.95/x
  3. Step 3: Cross multiply
    744,897.78x = 1,027,887.78 × 418,135.95
  4. Step 4: Simplify right side
    744,897.78x = 429,796,833,383.69
  5. Step 5: Solve for x
    x = 429,796,833,383.69/744,897.78
  6. Step 6: Final answer
    x = 576,987.67

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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.