Home / 1,142,728,288.76-1,576,838,950.79-640,833,789.13

Finding the Fourth Proportional to 1,142,728,288.76, 1,576,838,950.79 and 640,833,789.13

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Solution

The fourth proportional to 1,142,728,288.76, 1,576,838,950.79 and 640,833,789.13 is: 884,279,919.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,728,288.76 : 1,576,838,950.79 = 640,833,789.13 : x
  2. Step 2: Convert to fraction form
    1,142,728,288.76/1,576,838,950.79 = 640,833,789.13/x
  3. Step 3: Cross multiply
    1,142,728,288.76x = 1,576,838,950.79 × 640,833,789.13
  4. Step 4: Simplify right side
    1,142,728,288.76x = 1,010,491,679,675,383,168
  5. Step 5: Solve for x
    x = 1,010,491,679,675,383,168/1,142,728,288.76
  6. Step 6: Final answer
    x = 884,279,919.92

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Double scale
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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.