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Finding the Fourth Proportional to 684,636.89, 944,726.22 and 378,664.65

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Solution

The fourth proportional to 684,636.89, 944,726.22 and 378,664.65 is: 522,517.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,636.89 : 944,726.22 = 378,664.65 : x
  2. Step 2: Convert to fraction form
    684,636.89/944,726.22 = 378,664.65/x
  3. Step 3: Cross multiply
    684,636.89x = 944,726.22 × 378,664.65
  4. Step 4: Simplify right side
    684,636.89x = 357,734,423,442.12
  5. Step 5: Solve for x
    x = 357,734,423,442.12/684,636.89
  6. Step 6: Final answer
    x = 522,517.02

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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.