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Finding the Fourth Proportional to 571,148.76, 788,165.46 and 316,523.64

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Solution

The fourth proportional to 571,148.76, 788,165.46 and 316,523.64 is: 436,791.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,148.76 : 788,165.46 = 316,523.64 : x
  2. Step 2: Convert to fraction form
    571,148.76/788,165.46 = 316,523.64/x
  3. Step 3: Cross multiply
    571,148.76x = 788,165.46 × 316,523.64
  4. Step 4: Simplify right side
    571,148.76x = 249,473,000,321.47
  5. Step 5: Solve for x
    x = 249,473,000,321.47/571,148.76
  6. Step 6: Final answer
    x = 436,791.63

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Double scale
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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.