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Finding the Fourth Proportional to 495,424.60, 743,136.90 and 346,125.40

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Solution

The fourth proportional to 495,424.60, 743,136.90 and 346,125.40 is: 519,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,424.60 : 743,136.90 = 346,125.40 : x
  2. Step 2: Convert to fraction form
    495,424.60/743,136.90 = 346,125.40/x
  3. Step 3: Cross multiply
    495,424.60x = 743,136.90 × 346,125.40
  4. Step 4: Simplify right side
    495,424.60x = 257,218,556,767.26
  5. Step 5: Solve for x
    x = 257,218,556,767.26/495,424.60
  6. Step 6: Final answer
    x = 519,188.10

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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.