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Finding the Fourth Proportional to 453,811.20, 680,862.60 and 304,220.40

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Solution

The fourth proportional to 453,811.20, 680,862.60 and 304,220.40 is: 456,428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,811.20 : 680,862.60 = 304,220.40 : x
  2. Step 2: Convert to fraction form
    453,811.20/680,862.60 = 304,220.40/x
  3. Step 3: Cross multiply
    453,811.20x = 680,862.60 × 304,220.40
  4. Step 4: Simplify right side
    453,811.20x = 207,132,292,517.04
  5. Step 5: Solve for x
    x = 207,132,292,517.04/453,811.20
  6. Step 6: Final answer
    x = 456,428.34

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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.