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Finding the Fourth Proportional to 571,404.78, 788,546.28 and 313,281.11

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Solution

The fourth proportional to 571,404.78, 788,546.28 and 313,281.11 is: 432,332.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,404.78 : 788,546.28 = 313,281.11 : x
  2. Step 2: Convert to fraction form
    571,404.78/788,546.28 = 313,281.11/x
  3. Step 3: Cross multiply
    571,404.78x = 788,546.28 × 313,281.11
  4. Step 4: Simplify right side
    571,404.78x = 247,036,653,682.29
  5. Step 5: Solve for x
    x = 247,036,653,682.29/571,404.78
  6. Step 6: Final answer
    x = 432,332.14

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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.