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Finding the Fourth Proportional to 571,513.02, 788,732.55 and 316,913.82

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Solution

The fourth proportional to 571,513.02, 788,732.55 and 316,913.82 is: 437,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,513.02 : 788,732.55 = 316,913.82 : x
  2. Step 2: Convert to fraction form
    571,513.02/788,732.55 = 316,913.82/x
  3. Step 3: Cross multiply
    571,513.02x = 788,732.55 × 316,913.82
  4. Step 4: Simplify right side
    571,513.02x = 249,960,245,378.84
  5. Step 5: Solve for x
    x = 249,960,245,378.84/571,513.02
  6. Step 6: Final answer
    x = 437,365.79

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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.