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Finding the Fourth Proportional to 673,520.16, 929,455.92 and 371,712

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Solution

The fourth proportional to 673,520.16, 929,455.92 and 371,712 is: 512,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,520.16 : 929,455.92 = 371,712 : x
  2. Step 2: Convert to fraction form
    673,520.16/929,455.92 = 371,712/x
  3. Step 3: Cross multiply
    673,520.16x = 929,455.92 × 371,712
  4. Step 4: Simplify right side
    673,520.16x = 345,489,918,935.04
  5. Step 5: Solve for x
    x = 345,489,918,935.04/673,520.16
  6. Step 6: Final answer
    x = 512,961.51

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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.