Home / 420,272,408.70-630,408,613.05-267,595,314.30

Finding the Fourth Proportional to 420,272,408.70, 630,408,613.05 and 267,595,314.30

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Solution

The fourth proportional to 420,272,408.70, 630,408,613.05 and 267,595,314.30 is: 401,392,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,272,408.70 : 630,408,613.05 = 267,595,314.30 : x
  2. Step 2: Convert to fraction form
    420,272,408.70/630,408,613.05 = 267,595,314.30/x
  3. Step 3: Cross multiply
    420,272,408.70x = 630,408,613.05 × 267,595,314.30
  4. Step 4: Simplify right side
    420,272,408.70x = 168,694,390,946,541,824
  5. Step 5: Solve for x
    x = 168,694,390,946,541,824/420,272,408.70
  6. Step 6: Final answer
    x = 401,392,971.45

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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.