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Finding the Fourth Proportional to 630,256.80, 869,772.72 and 343,795.44

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Solution

The fourth proportional to 630,256.80, 869,772.72 and 343,795.44 is: 474,447.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,256.80 : 869,772.72 = 343,795.44 : x
  2. Step 2: Convert to fraction form
    630,256.80/869,772.72 = 343,795.44/x
  3. Step 3: Cross multiply
    630,256.80x = 869,772.72 × 343,795.44
  4. Step 4: Simplify right side
    630,256.80x = 299,023,894,972.40
  5. Step 5: Solve for x
    x = 299,023,894,972.40/630,256.80
  6. Step 6: Final answer
    x = 474,447.71

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1.5x scale

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.