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Finding the Third Proportional to 429,340 and 630,878

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Solution

The third proportional to 429,340 and 630,878 is: 927,020.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,340 : 630,878 = 630,878 : x
  2. Step 2: Convert to fraction form
    429,340/630,878 = 630,878/x
  3. Step 3: Cross multiply
    429,340x = 630,878 × 630,878
  4. Step 4: Simplify right side
    429,340x = 398,007,050,884
  5. Step 5: Solve for x
    x = 398,007,050,884/429,340
  6. Step 6: Final answer
    x = 927,020.66

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.