Home / 12,478,520.40-18,718,444.80-3,959,523.60

Finding the Fourth Proportional to 12,478,520.40, 18,718,444.80 and 3,959,523.60

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Solution

The fourth proportional to 12,478,520.40, 18,718,444.80 and 3,959,523.60 is: 5,939,496.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,520.40 : 18,718,444.80 = 3,959,523.60 : x
  2. Step 2: Convert to fraction form
    12,478,520.40/18,718,444.80 = 3,959,523.60/x
  3. Step 3: Cross multiply
    12,478,520.40x = 18,718,444.80 × 3,959,523.60
  4. Step 4: Simplify right side
    12,478,520.40x = 74,116,123,940,897.28
  5. Step 5: Solve for x
    x = 74,116,123,940,897.28/12,478,520.40
  6. Step 6: Final answer
    x = 5,939,496.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.