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Finding the Fourth Proportional to 661,714.80, 992,831.40 and 262,287.60

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Solution

The fourth proportional to 661,714.80, 992,831.40 and 262,287.60 is: 393,534.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,714.80 : 992,831.40 = 262,287.60 : x
  2. Step 2: Convert to fraction form
    661,714.80/992,831.40 = 262,287.60/x
  3. Step 3: Cross multiply
    661,714.80x = 992,831.40 × 262,287.60
  4. Step 4: Simplify right side
    661,714.80x = 260,407,365,110.64
  5. Step 5: Solve for x
    x = 260,407,365,110.64/661,714.80
  6. Step 6: Final answer
    x = 393,534.14

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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.