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Finding the Fourth Proportional to 571,395.78, 788,473.16 and 316,725.30

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Solution

The fourth proportional to 571,395.78, 788,473.16 and 316,725.30 is: 437,051.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,395.78 : 788,473.16 = 316,725.30 : x
  2. Step 2: Convert to fraction form
    571,395.78/788,473.16 = 316,725.30/x
  3. Step 3: Cross multiply
    571,395.78x = 788,473.16 × 316,725.30
  4. Step 4: Simplify right side
    571,395.78x = 249,729,398,142.95
  5. Step 5: Solve for x
    x = 249,729,398,142.95/571,395.78
  6. Step 6: Final answer
    x = 437,051.53

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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.