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Finding the Fourth Proportional to 630,296.76, 869,815.08 and 343,818.12

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Solution

The fourth proportional to 630,296.76, 869,815.08 and 343,818.12 is: 474,472.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,296.76 : 869,815.08 = 343,818.12 : x
  2. Step 2: Convert to fraction form
    630,296.76/869,815.08 = 343,818.12/x
  3. Step 3: Cross multiply
    630,296.76x = 869,815.08 × 343,818.12
  4. Step 4: Simplify right side
    630,296.76x = 299,058,185,553.25
  5. Step 5: Solve for x
    x = 299,058,185,553.25/630,296.76
  6. Step 6: Final answer
    x = 474,472.03

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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.