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Finding the Fourth Proportional to 571,120.30, 788,146.02 and 316,471.48

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Solution

The fourth proportional to 571,120.30, 788,146.02 and 316,471.48 is: 436,730.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,120.30 : 788,146.02 = 316,471.48 : x
  2. Step 2: Convert to fraction form
    571,120.30/788,146.02 = 316,471.48/x
  3. Step 3: Cross multiply
    571,120.30x = 788,146.02 × 316,471.48
  4. Step 4: Simplify right side
    571,120.30x = 249,425,737,405.51
  5. Step 5: Solve for x
    x = 249,425,737,405.51/571,120.30
  6. Step 6: Final answer
    x = 436,730.65

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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.