Home / 684,065.20-943,996.07-378,154.47

Finding the Fourth Proportional to 684,065.20, 943,996.07 and 378,154.47

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Solution

The fourth proportional to 684,065.20, 943,996.07 and 378,154.47 is: 521,845.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,065.20 : 943,996.07 = 378,154.47 : x
  2. Step 2: Convert to fraction form
    684,065.20/943,996.07 = 378,154.47/x
  3. Step 3: Cross multiply
    684,065.20x = 943,996.07 × 378,154.47
  4. Step 4: Simplify right side
    684,065.20x = 356,976,338,018.30
  5. Step 5: Solve for x
    x = 356,976,338,018.30/684,065.20
  6. Step 6: Final answer
    x = 521,845.49

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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.