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Finding the Fourth Proportional to 684,012.80, 943,908.16 and 378,073.28

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Solution

The fourth proportional to 684,012.80, 943,908.16 and 378,073.28 is: 521,724.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,012.80 : 943,908.16 = 378,073.28 : x
  2. Step 2: Convert to fraction form
    684,012.80/943,908.16 = 378,073.28/x
  3. Step 3: Cross multiply
    684,012.80x = 943,908.16 × 378,073.28
  4. Step 4: Simplify right side
    684,012.80x = 356,866,454,069.97
  5. Step 5: Solve for x
    x = 356,866,454,069.97/684,012.80
  6. Step 6: Final answer
    x = 521,724.82

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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.