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Finding the Fourth Proportional to 571,265.52, 788,291.28 and 316,611.60

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Solution

The fourth proportional to 571,265.52, 788,291.28 and 316,611.60 is: 436,893.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,265.52 : 788,291.28 = 316,611.60 : x
  2. Step 2: Convert to fraction form
    571,265.52/788,291.28 = 316,611.60/x
  3. Step 3: Cross multiply
    571,265.52x = 788,291.28 × 316,611.60
  4. Step 4: Simplify right side
    571,265.52x = 249,582,163,426.85
  5. Step 5: Solve for x
    x = 249,582,163,426.85/571,265.52
  6. Step 6: Final answer
    x = 436,893.45

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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.