Home / 429,138,000.30-643,707,000.45-106,021,872.30

Finding the Fourth Proportional to 429,138,000.30, 643,707,000.45 and 106,021,872.30

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Solution

The fourth proportional to 429,138,000.30, 643,707,000.45 and 106,021,872.30 is: 159,032,808.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,138,000.30 : 643,707,000.45 = 106,021,872.30 : x
  2. Step 2: Convert to fraction form
    429,138,000.30/643,707,000.45 = 106,021,872.30/x
  3. Step 3: Cross multiply
    429,138,000.30x = 643,707,000.45 × 106,021,872.30
  4. Step 4: Simplify right side
    429,138,000.30x = 68,247,021,400,325,944
  5. Step 5: Solve for x
    x = 68,247,021,400,325,944/429,138,000.30
  6. Step 6: Final answer
    x = 159,032,808.45

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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.