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Finding the Fourth Proportional to 606,978.90, 910,468.35 and 494,785.80

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Solution

The fourth proportional to 606,978.90, 910,468.35 and 494,785.80 is: 742,178.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,978.90 : 910,468.35 = 494,785.80 : x
  2. Step 2: Convert to fraction form
    606,978.90/910,468.35 = 494,785.80/x
  3. Step 3: Cross multiply
    606,978.90x = 910,468.35 × 494,785.80
  4. Step 4: Simplify right side
    606,978.90x = 450,486,810,929.43
  5. Step 5: Solve for x
    x = 450,486,810,929.43/606,978.90
  6. Step 6: Final answer
    x = 742,178.70

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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.