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Finding the Fourth Proportional to 829,921.60, 1,243,132.80 and 829,921.60

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Solution

The fourth proportional to 829,921.60, 1,243,132.80 and 829,921.60 is: 1,243,132.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,921.60 : 1,243,132.80 = 829,921.60 : x
  2. Step 2: Convert to fraction form
    829,921.60/1,243,132.80 = 829,921.60/x
  3. Step 3: Cross multiply
    829,921.60x = 1,243,132.80 × 829,921.60
  4. Step 4: Simplify right side
    829,921.60x = 1,031,702,762,388.48
  5. Step 5: Solve for x
    x = 1,031,702,762,388.48/829,921.60
  6. Step 6: Final answer
    x = 1,243,132.80

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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.