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Finding the Fourth Proportional to 551,337, 760,788.34 and 309,617.62

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Solution

The fourth proportional to 551,337, 760,788.34 and 309,617.62 is: 427,240.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,337 : 760,788.34 = 309,617.62 : x
  2. Step 2: Convert to fraction form
    551,337/760,788.34 = 309,617.62/x
  3. Step 3: Cross multiply
    551,337x = 760,788.34 × 309,617.62
  4. Step 4: Simplify right side
    551,337x = 235,553,475,154.55
  5. Step 5: Solve for x
    x = 235,553,475,154.55/551,337
  6. Step 6: Final answer
    x = 427,240.46

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1.5x scale

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.