Home / 684,999.20-945,678.94-413,135.66

Finding the Fourth Proportional to 684,999.20, 945,678.94 and 413,135.66

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Solution

The fourth proportional to 684,999.20, 945,678.94 and 413,135.66 is: 570,356.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,999.20 : 945,678.94 = 413,135.66 : x
  2. Step 2: Convert to fraction form
    684,999.20/945,678.94 = 413,135.66/x
  3. Step 3: Cross multiply
    684,999.20x = 945,678.94 × 413,135.66
  4. Step 4: Simplify right side
    684,999.20x = 390,693,693,025.00
  5. Step 5: Solve for x
    x = 390,693,693,025.00/684,999.20
  6. Step 6: Final answer
    x = 570,356.42

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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.