Home / 420,411,396.91-630,614,801.45-171,415,677.33

Finding the Fourth Proportional to 420,411,396.91, 630,614,801.45 and 171,415,677.33

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Solution

The fourth proportional to 420,411,396.91, 630,614,801.45 and 171,415,677.33 is: 257,122,580.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,411,396.91 : 630,614,801.45 = 171,415,677.33 : x
  2. Step 2: Convert to fraction form
    420,411,396.91/630,614,801.45 = 171,415,677.33/x
  3. Step 3: Cross multiply
    420,411,396.91x = 630,614,801.45 × 171,415,677.33
  4. Step 4: Simplify right side
    420,411,396.91x = 108,097,263,324,948,944
  5. Step 5: Solve for x
    x = 108,097,263,324,948,944/420,411,396.91
  6. Step 6: Final answer
    x = 257,122,580.69

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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.