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Finding the Fourth Proportional to 614,795.40, 921,208.95 and 404,187.30

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Solution

The fourth proportional to 614,795.40, 921,208.95 and 404,187.30 is: 605,633.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,795.40 : 921,208.95 = 404,187.30 : x
  2. Step 2: Convert to fraction form
    614,795.40/921,208.95 = 404,187.30/x
  3. Step 3: Cross multiply
    614,795.40x = 921,208.95 × 404,187.30
  4. Step 4: Simplify right side
    614,795.40x = 372,340,958,236.34
  5. Step 5: Solve for x
    x = 372,340,958,236.34/614,795.40
  6. Step 6: Final answer
    x = 605,633.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.