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Finding the Fourth Proportional to 515,957.60, 772,186.80 and 515,957.60

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Solution

The fourth proportional to 515,957.60, 772,186.80 and 515,957.60 is: 772,186.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,957.60 : 772,186.80 = 515,957.60 : x
  2. Step 2: Convert to fraction form
    515,957.60/772,186.80 = 515,957.60/x
  3. Step 3: Cross multiply
    515,957.60x = 772,186.80 × 515,957.60
  4. Step 4: Simplify right side
    515,957.60x = 398,415,648,079.68
  5. Step 5: Solve for x
    x = 398,415,648,079.68/515,957.60
  6. Step 6: Final answer
    x = 772,186.80

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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.