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Finding the Fourth Proportional to 571,671, 788,849.28 and 330,031.53

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Solution

The fourth proportional to 571,671, 788,849.28 and 330,031.53 is: 455,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,671 : 788,849.28 = 330,031.53 : x
  2. Step 2: Convert to fraction form
    571,671/788,849.28 = 330,031.53/x
  3. Step 3: Cross multiply
    571,671x = 788,849.28 × 330,031.53
  4. Step 4: Simplify right side
    571,671x = 260,345,134,817.80
  5. Step 5: Solve for x
    x = 260,345,134,817.80/571,671
  6. Step 6: Final answer
    x = 455,410.78

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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.