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Finding the Fourth Proportional to 676,808.70, 933,996.16 and 404,887.92

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Solution

The fourth proportional to 676,808.70, 933,996.16 and 404,887.92 is: 558,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,808.70 : 933,996.16 = 404,887.92 : x
  2. Step 2: Convert to fraction form
    676,808.70/933,996.16 = 404,887.92/x
  3. Step 3: Cross multiply
    676,808.70x = 933,996.16 × 404,887.92
  4. Step 4: Simplify right side
    676,808.70x = 378,163,762,510.39
  5. Step 5: Solve for x
    x = 378,163,762,510.39/676,808.70
  6. Step 6: Final answer
    x = 558,745.42

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1.5x scale

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.