Home / 684,066.20-943,997.45-378,155.47

Finding the Fourth Proportional to 684,066.20, 943,997.45 and 378,155.47

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Solution

The fourth proportional to 684,066.20, 943,997.45 and 378,155.47 is: 521,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,066.20 : 943,997.45 = 378,155.47 : x
  2. Step 2: Convert to fraction form
    684,066.20/943,997.45 = 378,155.47/x
  3. Step 3: Cross multiply
    684,066.20x = 943,997.45 × 378,155.47
  4. Step 4: Simplify right side
    684,066.20x = 356,977,799,383.55
  5. Step 5: Solve for x
    x = 356,977,799,383.55/684,066.20
  6. Step 6: Final answer
    x = 521,846.86

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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.