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Finding the Fourth Proportional to 571,429.44, 788,573.74 and 316,780.63

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Solution

The fourth proportional to 571,429.44, 788,573.74 and 316,780.63 is: 437,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,429.44 : 788,573.74 = 316,780.63 : x
  2. Step 2: Convert to fraction form
    571,429.44/788,573.74 = 316,780.63/x
  3. Step 3: Cross multiply
    571,429.44x = 788,573.74 × 316,780.63
  4. Step 4: Simplify right side
    571,429.44x = 249,804,883,395.27
  5. Step 5: Solve for x
    x = 249,804,883,395.27/571,429.44
  6. Step 6: Final answer
    x = 437,157.88

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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.