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Finding the Fourth Proportional to 571,682.34, 788,864.73 and 330,042.90

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Solution

The fourth proportional to 571,682.34, 788,864.73 and 330,042.90 is: 455,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,682.34 : 788,864.73 = 330,042.90 : x
  2. Step 2: Convert to fraction form
    571,682.34/788,864.73 = 330,042.90/x
  3. Step 3: Cross multiply
    571,682.34x = 788,864.73 × 330,042.90
  4. Step 4: Simplify right side
    571,682.34x = 260,359,203,196.92
  5. Step 5: Solve for x
    x = 260,359,203,196.92/571,682.34
  6. Step 6: Final answer
    x = 455,426.35

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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.