Home / 708,691,727.20-1,063,037,590.80-640,667,279.20

Finding the Fourth Proportional to 708,691,727.20, 1,063,037,590.80 and 640,667,279.20

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Solution

The fourth proportional to 708,691,727.20, 1,063,037,590.80 and 640,667,279.20 is: 961,000,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,691,727.20 : 1,063,037,590.80 = 640,667,279.20 : x
  2. Step 2: Convert to fraction form
    708,691,727.20/1,063,037,590.80 = 640,667,279.20/x
  3. Step 3: Cross multiply
    708,691,727.20x = 1,063,037,590.80 × 640,667,279.20
  4. Step 4: Simplify right side
    708,691,727.20x = 681,053,400,985,158,912
  5. Step 5: Solve for x
    x = 681,053,400,985,158,912/708,691,727.20
  6. Step 6: Final answer
    x = 961,000,918.80

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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.