Home / 423,421,279.16-635,061,473.02-128,246,219.90

Finding the Fourth Proportional to 423,421,279.16, 635,061,473.02 and 128,246,219.90

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Solution

The fourth proportional to 423,421,279.16, 635,061,473.02 and 128,246,219.90 is: 192,347,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,421,279.16 : 635,061,473.02 = 128,246,219.90 : x
  2. Step 2: Convert to fraction form
    423,421,279.16/635,061,473.02 = 128,246,219.90/x
  3. Step 3: Cross multiply
    423,421,279.16x = 635,061,473.02 × 128,246,219.90
  4. Step 4: Simplify right side
    423,421,279.16x = 81,444,233,318,940,832
  5. Step 5: Solve for x
    x = 81,444,233,318,940,832/423,421,279.16
  6. Step 6: Final answer
    x = 192,347,993.19

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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.