Home / 688,305,814.73-1,031,723,543.56-392,564,212.64

Finding the Fourth Proportional to 688,305,814.73, 1,031,723,543.56 and 392,564,212.64

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Solution

The fourth proportional to 688,305,814.73, 1,031,723,543.56 and 392,564,212.64 is: 588,427,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,305,814.73 : 1,031,723,543.56 = 392,564,212.64 : x
  2. Step 2: Convert to fraction form
    688,305,814.73/1,031,723,543.56 = 392,564,212.64/x
  3. Step 3: Cross multiply
    688,305,814.73x = 1,031,723,543.56 × 392,564,212.64
  4. Step 4: Simplify right side
    688,305,814.73x = 405,017,740,540,067,200
  5. Step 5: Solve for x
    x = 405,017,740,540,067,200/688,305,814.73
  6. Step 6: Final answer
    x = 588,427,021.64

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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.