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Finding the Fourth Proportional to 630,432.47, 944,860.66 and 405,193.43

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Solution

The fourth proportional to 630,432.47, 944,860.66 and 405,193.43 is: 607,283.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,432.47 : 944,860.66 = 405,193.43 : x
  2. Step 2: Convert to fraction form
    630,432.47/944,860.66 = 405,193.43/x
  3. Step 3: Cross multiply
    630,432.47x = 944,860.66 × 405,193.43
  4. Step 4: Simplify right side
    630,432.47x = 382,851,325,960.18
  5. Step 5: Solve for x
    x = 382,851,325,960.18/630,432.47
  6. Step 6: Final answer
    x = 607,283.65

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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.