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Finding the Fourth Proportional to 453,854.40, 680,781.60 and 445,981.20

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Solution

The fourth proportional to 453,854.40, 680,781.60 and 445,981.20 is: 668,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,854.40 : 680,781.60 = 445,981.20 : x
  2. Step 2: Convert to fraction form
    453,854.40/680,781.60 = 445,981.20/x
  3. Step 3: Cross multiply
    453,854.40x = 680,781.60 × 445,981.20
  4. Step 4: Simplify right side
    453,854.40x = 303,615,794,905.92
  5. Step 5: Solve for x
    x = 303,615,794,905.92/453,854.40
  6. Step 6: Final answer
    x = 668,971.80

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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.