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Finding the Fourth Proportional to 614,758.40, 921,153.45 and 404,150.30

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Solution

The fourth proportional to 614,758.40, 921,153.45 and 404,150.30 is: 605,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,758.40 : 921,153.45 = 404,150.30 : x
  2. Step 2: Convert to fraction form
    614,758.40/921,153.45 = 404,150.30/x
  3. Step 3: Cross multiply
    614,758.40x = 921,153.45 × 404,150.30
  4. Step 4: Simplify right side
    614,758.40x = 372,284,443,163.54
  5. Step 5: Solve for x
    x = 372,284,443,163.54/614,758.40
  6. Step 6: Final answer
    x = 605,578.46

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1.5x scale

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.