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Finding the Fourth Proportional to 571,082.58, 788,082.21 and 316,431.54

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Solution

The fourth proportional to 571,082.58, 788,082.21 and 316,431.54 is: 436,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,082.58 : 788,082.21 = 316,431.54 : x
  2. Step 2: Convert to fraction form
    571,082.58/788,082.21 = 316,431.54/x
  3. Step 3: Cross multiply
    571,082.58x = 788,082.21 × 316,431.54
  4. Step 4: Simplify right side
    571,082.58x = 249,374,067,356.90
  5. Step 5: Solve for x
    x = 249,374,067,356.90/571,082.58
  6. Step 6: Final answer
    x = 436,669.01

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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.