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Finding the Fourth Proportional to 493,632.50, 740,137.70 and 418,778.78

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Solution

The fourth proportional to 493,632.50, 740,137.70 and 418,778.78 is: 627,904.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,632.50 : 740,137.70 = 418,778.78 : x
  2. Step 2: Convert to fraction form
    493,632.50/740,137.70 = 418,778.78/x
  3. Step 3: Cross multiply
    493,632.50x = 740,137.70 × 418,778.78
  4. Step 4: Simplify right side
    493,632.50x = 309,953,960,384.26
  5. Step 5: Solve for x
    x = 309,953,960,384.26/493,632.50
  6. Step 6: Final answer
    x = 627,904.29

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1.5x scale

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.