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Finding the Fourth Proportional to 787,622.40, 1,182,308.40 and 488,440.80

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Solution

The fourth proportional to 787,622.40, 1,182,308.40 and 488,440.80 is: 733,203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,622.40 : 1,182,308.40 = 488,440.80 : x
  2. Step 2: Convert to fraction form
    787,622.40/1,182,308.40 = 488,440.80/x
  3. Step 3: Cross multiply
    787,622.40x = 1,182,308.40 × 488,440.80
  4. Step 4: Simplify right side
    787,622.40x = 577,487,660,742.72
  5. Step 5: Solve for x
    x = 577,487,660,742.72/787,622.40
  6. Step 6: Final answer
    x = 733,203.70

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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.