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Finding the Fourth Proportional to 488,695.34, 673,999.70 and 343,980.18

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Solution

The fourth proportional to 488,695.34, 673,999.70 and 343,980.18 is: 474,411.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,695.34 : 673,999.70 = 343,980.18 : x
  2. Step 2: Convert to fraction form
    488,695.34/673,999.70 = 343,980.18/x
  3. Step 3: Cross multiply
    488,695.34x = 673,999.70 × 343,980.18
  4. Step 4: Simplify right side
    488,695.34x = 231,842,538,125.95
  5. Step 5: Solve for x
    x = 231,842,538,125.95/488,695.34
  6. Step 6: Final answer
    x = 474,411.19

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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.