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Finding the Fourth Proportional to 571,578.29, 788,705.54 and 313,387.29

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Solution

The fourth proportional to 571,578.29, 788,705.54 and 313,387.29 is: 432,434.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,578.29 : 788,705.54 = 313,387.29 : x
  2. Step 2: Convert to fraction form
    571,578.29/788,705.54 = 313,387.29/x
  3. Step 3: Cross multiply
    571,578.29x = 788,705.54 × 313,387.29
  4. Step 4: Simplify right side
    571,578.29x = 247,170,291,788.59
  5. Step 5: Solve for x
    x = 247,170,291,788.59/571,578.29
  6. Step 6: Final answer
    x = 432,434.71

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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.