Home / 571,115.43-788,139.28-316,466.61

Finding the Fourth Proportional to 571,115.43, 788,139.28 and 316,466.61

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Solution

The fourth proportional to 571,115.43, 788,139.28 and 316,466.61 is: 436,723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,115.43 : 788,139.28 = 316,466.61 : x
  2. Step 2: Convert to fraction form
    571,115.43/788,139.28 = 316,466.61/x
  3. Step 3: Cross multiply
    571,115.43x = 788,139.28 × 316,466.61
  4. Step 4: Simplify right side
    571,115.43x = 249,419,768,119.79
  5. Step 5: Solve for x
    x = 249,419,768,119.79/571,115.43
  6. Step 6: Final answer
    x = 436,723.92

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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.