Home / 858,244,145.40-1,287,366,218.10-421,824,796.20

Finding the Fourth Proportional to 858,244,145.40, 1,287,366,218.10 and 421,824,796.20

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Solution

The fourth proportional to 858,244,145.40, 1,287,366,218.10 and 421,824,796.20 is: 632,737,194.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,244,145.40 : 1,287,366,218.10 = 421,824,796.20 : x
  2. Step 2: Convert to fraction form
    858,244,145.40/1,287,366,218.10 = 421,824,796.20/x
  3. Step 3: Cross multiply
    858,244,145.40x = 1,287,366,218.10 × 421,824,796.20
  4. Step 4: Simplify right side
    858,244,145.40x = 543,042,992,584,797,184
  5. Step 5: Solve for x
    x = 543,042,992,584,797,184/858,244,145.40
  6. Step 6: Final answer
    x = 632,737,194.30

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Double scale
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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.