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Finding the Fourth Proportional to 571,681.09, 788,914.53 and 313,552.78

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Solution

The fourth proportional to 571,681.09, 788,914.53 and 313,552.78 is: 432,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,681.09 : 788,914.53 = 313,552.78 : x
  2. Step 2: Convert to fraction form
    571,681.09/788,914.53 = 313,552.78/x
  3. Step 3: Cross multiply
    571,681.09x = 788,914.53 × 313,552.78
  4. Step 4: Simplify right side
    571,681.09x = 247,366,342,091.61
  5. Step 5: Solve for x
    x = 247,366,342,091.61/571,681.09
  6. Step 6: Final answer
    x = 432,699.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.