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Finding the Fourth Proportional to 495,861.90, 744,570.45 and 285,909.90

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Solution

The fourth proportional to 495,861.90, 744,570.45 and 285,909.90 is: 429,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,861.90 : 744,570.45 = 285,909.90 : x
  2. Step 2: Convert to fraction form
    495,861.90/744,570.45 = 285,909.90/x
  3. Step 3: Cross multiply
    495,861.90x = 744,570.45 × 285,909.90
  4. Step 4: Simplify right side
    495,861.90x = 212,880,062,902.46
  5. Step 5: Solve for x
    x = 212,880,062,902.46/495,861.90
  6. Step 6: Final answer
    x = 429,313.21

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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.