Home / 9,989,451.28-13,785,442.82-5,405,772.70

Finding the Fourth Proportional to 9,989,451.28, 13,785,442.82 and 5,405,772.70

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Solution

The fourth proportional to 9,989,451.28, 13,785,442.82 and 5,405,772.70 is: 7,459,966.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,451.28 : 13,785,442.82 = 5,405,772.70 : x
  2. Step 2: Convert to fraction form
    9,989,451.28/13,785,442.82 = 5,405,772.70/x
  3. Step 3: Cross multiply
    9,989,451.28x = 13,785,442.82 × 5,405,772.70
  4. Step 4: Simplify right side
    9,989,451.28x = 74,520,970,453,767.02
  5. Step 5: Solve for x
    x = 74,520,970,453,767.02/9,989,451.28
  6. Step 6: Final answer
    x = 7,459,966.36

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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.