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Finding the Fourth Proportional to 684,622.14, 944,705.83 and 378,649.90

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Solution

The fourth proportional to 684,622.14, 944,705.83 and 378,649.90 is: 522,496.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,622.14 : 944,705.83 = 378,649.90 : x
  2. Step 2: Convert to fraction form
    684,622.14/944,705.83 = 378,649.90/x
  3. Step 3: Cross multiply
    684,622.14x = 944,705.83 × 378,649.90
  4. Step 4: Simplify right side
    684,622.14x = 357,712,768,058.92
  5. Step 5: Solve for x
    x = 357,712,768,058.92/684,622.14
  6. Step 6: Final answer
    x = 522,496.64

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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.