Home / 653,220,012.60-979,830,018.90-638,103,468.60

Finding the Fourth Proportional to 653,220,012.60, 979,830,018.90 and 638,103,468.60

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Solution

The fourth proportional to 653,220,012.60, 979,830,018.90 and 638,103,468.60 is: 957,155,202.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,220,012.60 : 979,830,018.90 = 638,103,468.60 : x
  2. Step 2: Convert to fraction form
    653,220,012.60/979,830,018.90 = 638,103,468.60/x
  3. Step 3: Cross multiply
    653,220,012.60x = 979,830,018.90 × 638,103,468.60
  4. Step 4: Simplify right side
    653,220,012.60x = 625,232,933,698,493,568
  5. Step 5: Solve for x
    x = 625,232,933,698,493,568/653,220,012.60
  6. Step 6: Final answer
    x = 957,155,202.90

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Double scale
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Similar ratio
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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.