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Finding the Fourth Proportional to 571,190.70, 788,274.54 and 316,536.42

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Solution

The fourth proportional to 571,190.70, 788,274.54 and 316,536.42 is: 436,837.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,190.70 : 788,274.54 = 316,536.42 : x
  2. Step 2: Convert to fraction form
    571,190.70/788,274.54 = 316,536.42/x
  3. Step 3: Cross multiply
    571,190.70x = 788,274.54 × 316,536.42
  4. Step 4: Simplify right side
    571,190.70x = 249,517,600,868.75
  5. Step 5: Solve for x
    x = 249,517,600,868.75/571,190.70
  6. Step 6: Final answer
    x = 436,837.65

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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.