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Finding the Fourth Proportional to 453,743.40, 680,615.10 and 445,870.20

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Solution

The fourth proportional to 453,743.40, 680,615.10 and 445,870.20 is: 668,805.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,743.40 : 680,615.10 = 445,870.20 : x
  2. Step 2: Convert to fraction form
    453,743.40/680,615.10 = 445,870.20/x
  3. Step 3: Cross multiply
    453,743.40x = 680,615.10 × 445,870.20
  4. Step 4: Simplify right side
    453,743.40x = 303,465,990,760.02
  5. Step 5: Solve for x
    x = 303,465,990,760.02/453,743.40
  6. Step 6: Final answer
    x = 668,805.30

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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.