Home / 661,845.20-992,767.80-551,620.40

Finding the Fourth Proportional to 661,845.20, 992,767.80 and 551,620.40

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Solution

The fourth proportional to 661,845.20, 992,767.80 and 551,620.40 is: 827,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,845.20 : 992,767.80 = 551,620.40 : x
  2. Step 2: Convert to fraction form
    661,845.20/992,767.80 = 551,620.40/x
  3. Step 3: Cross multiply
    661,845.20x = 992,767.80 × 551,620.40
  4. Step 4: Simplify right side
    661,845.20x = 547,630,970,943.12
  5. Step 5: Solve for x
    x = 547,630,970,943.12/661,845.20
  6. Step 6: Final answer
    x = 827,430.60

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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.