Home / 579,253,289.40-868,879,934.10-395,587,279.80

Finding the Fourth Proportional to 579,253,289.40, 868,879,934.10 and 395,587,279.80

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Solution

The fourth proportional to 579,253,289.40, 868,879,934.10 and 395,587,279.80 is: 593,380,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,253,289.40 : 868,879,934.10 = 395,587,279.80 : x
  2. Step 2: Convert to fraction form
    579,253,289.40/868,879,934.10 = 395,587,279.80/x
  3. Step 3: Cross multiply
    579,253,289.40x = 868,879,934.10 × 395,587,279.80
  4. Step 4: Simplify right side
    579,253,289.40x = 343,717,849,603,422,272
  5. Step 5: Solve for x
    x = 343,717,849,603,422,272/579,253,289.40
  6. Step 6: Final answer
    x = 593,380,919.70

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Double scale
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1.5x scale

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.