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Finding the Fourth Proportional to 946,396.71, 1,305,978.39 and 538,490.30

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Solution

The fourth proportional to 946,396.71, 1,305,978.39 and 538,490.30 is: 743,088.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    946,396.71 : 1,305,978.39 = 538,490.30 : x
  2. Step 2: Convert to fraction form
    946,396.71/1,305,978.39 = 538,490.30/x
  3. Step 3: Cross multiply
    946,396.71x = 1,305,978.39 × 538,490.30
  4. Step 4: Simplify right side
    946,396.71x = 703,256,688,494.73
  5. Step 5: Solve for x
    x = 703,256,688,494.73/946,396.71
  6. Step 6: Final answer
    x = 743,088.69

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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.