Home / 639,515,109.60-959,272,664.40-630,905,765.40

Finding the Fourth Proportional to 639,515,109.60, 959,272,664.40 and 630,905,765.40

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Solution

The fourth proportional to 639,515,109.60, 959,272,664.40 and 630,905,765.40 is: 946,358,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,515,109.60 : 959,272,664.40 = 630,905,765.40 : x
  2. Step 2: Convert to fraction form
    639,515,109.60/959,272,664.40 = 630,905,765.40/x
  3. Step 3: Cross multiply
    639,515,109.60x = 959,272,664.40 × 630,905,765.40
  4. Step 4: Simplify right side
    639,515,109.60x = 605,210,654,560,579,328
  5. Step 5: Solve for x
    x = 605,210,654,560,579,328/639,515,109.60
  6. Step 6: Final answer
    x = 946,358,648.10

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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.