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Finding the Fourth Proportional to 571,417.30, 857,133.24 and 393,876.64

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Solution

The fourth proportional to 571,417.30, 857,133.24 and 393,876.64 is: 590,819.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,417.30 : 857,133.24 = 393,876.64 : x
  2. Step 2: Convert to fraction form
    571,417.30/857,133.24 = 393,876.64/x
  3. Step 3: Cross multiply
    571,417.30x = 857,133.24 × 393,876.64
  4. Step 4: Simplify right side
    571,417.30x = 337,604,760,603.51
  5. Step 5: Solve for x
    x = 337,604,760,603.51/571,417.30
  6. Step 6: Final answer
    x = 590,819.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.