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Finding the Fourth Proportional to 661,716.84, 992,020.14 and 549,081.48

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Solution

The fourth proportional to 661,716.84, 992,020.14 and 549,081.48 is: 823,161.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,716.84 : 992,020.14 = 549,081.48 : x
  2. Step 2: Convert to fraction form
    661,716.84/992,020.14 = 549,081.48/x
  3. Step 3: Cross multiply
    661,716.84x = 992,020.14 × 549,081.48
  4. Step 4: Simplify right side
    661,716.84x = 544,699,886,661.01
  5. Step 5: Solve for x
    x = 544,699,886,661.01/661,716.84
  6. Step 6: Final answer
    x = 823,161.59

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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.