Home / 630,432,028.90-945,648,043.35-388,567,324.90

Finding the Fourth Proportional to 630,432,028.90, 945,648,043.35 and 388,567,324.90

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Solution

The fourth proportional to 630,432,028.90, 945,648,043.35 and 388,567,324.90 is: 582,850,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,432,028.90 : 945,648,043.35 = 388,567,324.90 : x
  2. Step 2: Convert to fraction form
    630,432,028.90/945,648,043.35 = 388,567,324.90/x
  3. Step 3: Cross multiply
    630,432,028.90x = 945,648,043.35 × 388,567,324.90
  4. Step 4: Simplify right side
    630,432,028.90x = 367,447,930,501,428,736
  5. Step 5: Solve for x
    x = 367,447,930,501,428,736/630,432,028.90
  6. Step 6: Final answer
    x = 582,850,987.35

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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.