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Finding the Fourth Proportional to 661,674.60, 992,025.90 and 262,117.80

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Solution

The fourth proportional to 661,674.60, 992,025.90 and 262,117.80 is: 392,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,674.60 : 992,025.90 = 262,117.80 : x
  2. Step 2: Convert to fraction form
    661,674.60/992,025.90 = 262,117.80/x
  3. Step 3: Cross multiply
    661,674.60x = 992,025.90 × 262,117.80
  4. Step 4: Simplify right side
    661,674.60x = 260,027,646,451.02
  5. Step 5: Solve for x
    x = 260,027,646,451.02/661,674.60
  6. Step 6: Final answer
    x = 392,984.17

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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.