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Finding the Fourth Proportional to 628,458.40, 941,132.40 and 403,472.80

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Solution

The fourth proportional to 628,458.40, 941,132.40 and 403,472.80 is: 604,210.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,458.40 : 941,132.40 = 403,472.80 : x
  2. Step 2: Convert to fraction form
    628,458.40/941,132.40 = 403,472.80/x
  3. Step 3: Cross multiply
    628,458.40x = 941,132.40 × 403,472.80
  4. Step 4: Simplify right side
    628,458.40x = 379,721,324,598.72
  5. Step 5: Solve for x
    x = 379,721,324,598.72/628,458.40
  6. Step 6: Final answer
    x = 604,210.76

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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.