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Finding the Fourth Proportional to 571,010.68, 787,961.82 and 316,346.68

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Solution

The fourth proportional to 571,010.68, 787,961.82 and 316,346.68 is: 436,540.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,010.68 : 787,961.82 = 316,346.68 : x
  2. Step 2: Convert to fraction form
    571,010.68/787,961.82 = 316,346.68/x
  3. Step 3: Cross multiply
    571,010.68x = 787,961.82 × 316,346.68
  4. Step 4: Simplify right side
    571,010.68x = 249,269,105,723.76
  5. Step 5: Solve for x
    x = 249,269,105,723.76/571,010.68
  6. Step 6: Final answer
    x = 436,540.18

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1.5x scale

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.