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Finding the Fourth Proportional to 630,307.45, 869,830.59 and 343,833.58

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Solution

The fourth proportional to 630,307.45, 869,830.59 and 343,833.58 is: 474,493.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,307.45 : 869,830.59 = 343,833.58 : x
  2. Step 2: Convert to fraction form
    630,307.45/869,830.59 = 343,833.58/x
  3. Step 3: Cross multiply
    630,307.45x = 869,830.59 × 343,833.58
  4. Step 4: Simplify right side
    630,307.45x = 299,076,965,753.21
  5. Step 5: Solve for x
    x = 299,076,965,753.21/630,307.45
  6. Step 6: Final answer
    x = 474,493.78

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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.