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Finding the Fourth Proportional to 630,433.77, 869,997.60 and 343,953.87

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Solution

The fourth proportional to 630,433.77, 869,997.60 and 343,953.87 is: 474,655.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,433.77 : 869,997.60 = 343,953.87 : x
  2. Step 2: Convert to fraction form
    630,433.77/869,997.60 = 343,953.87/x
  3. Step 3: Cross multiply
    630,433.77x = 869,997.60 × 343,953.87
  4. Step 4: Simplify right side
    630,433.77x = 299,239,041,410.71
  5. Step 5: Solve for x
    x = 299,239,041,410.71/630,433.77
  6. Step 6: Final answer
    x = 474,655.79

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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.