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Finding the Fourth Proportional to 659,907.78, 910,672.74 and 358,101.78

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Solution

The fourth proportional to 659,907.78, 910,672.74 and 358,101.78 is: 494,180.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,907.78 : 910,672.74 = 358,101.78 : x
  2. Step 2: Convert to fraction form
    659,907.78/910,672.74 = 358,101.78/x
  3. Step 3: Cross multiply
    659,907.78x = 910,672.74 × 358,101.78
  4. Step 4: Simplify right side
    659,907.78x = 326,113,529,191.48
  5. Step 5: Solve for x
    x = 326,113,529,191.48/659,907.78
  6. Step 6: Final answer
    x = 494,180.46

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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.