Home / 961,307,997.60-1,441,961,996.40-638,191,869.60

Finding the Fourth Proportional to 961,307,997.60, 1,441,961,996.40 and 638,191,869.60

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Solution

The fourth proportional to 961,307,997.60, 1,441,961,996.40 and 638,191,869.60 is: 957,287,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,307,997.60 : 1,441,961,996.40 = 638,191,869.60 : x
  2. Step 2: Convert to fraction form
    961,307,997.60/1,441,961,996.40 = 638,191,869.60/x
  3. Step 3: Cross multiply
    961,307,997.60x = 1,441,961,996.40 × 638,191,869.60
  4. Step 4: Simplify right side
    961,307,997.60x = 920,248,422,374,664,576
  5. Step 5: Solve for x
    x = 920,248,422,374,664,576/961,307,997.60
  6. Step 6: Final answer
    x = 957,287,804.40

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Half scale
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Double scale
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Similar ratio
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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.