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Finding the Fourth Proportional to 630,359.69, 869,829.30 and 354,712.73

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Solution

The fourth proportional to 630,359.69, 869,829.30 and 354,712.73 is: 489,465.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,359.69 : 869,829.30 = 354,712.73 : x
  2. Step 2: Convert to fraction form
    630,359.69/869,829.30 = 354,712.73/x
  3. Step 3: Cross multiply
    630,359.69x = 869,829.30 × 354,712.73
  4. Step 4: Simplify right side
    630,359.69x = 308,539,523,863.43
  5. Step 5: Solve for x
    x = 308,539,523,863.43/630,359.69
  6. Step 6: Final answer
    x = 489,465.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.