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Finding the Fourth Proportional to 495,779.46, 743,643.09 and 290,728.14

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Solution

The fourth proportional to 495,779.46, 743,643.09 and 290,728.14 is: 436,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,779.46 : 743,643.09 = 290,728.14 : x
  2. Step 2: Convert to fraction form
    495,779.46/743,643.09 = 290,728.14/x
  3. Step 3: Cross multiply
    495,779.46x = 743,643.09 × 290,728.14
  4. Step 4: Simplify right side
    495,779.46x = 216,197,972,379.55
  5. Step 5: Solve for x
    x = 216,197,972,379.55/495,779.46
  6. Step 6: Final answer
    x = 436,076.90

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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.