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Finding the Fourth Proportional to 630,361.45, 869,900.84 and 343,887.53

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Solution

The fourth proportional to 630,361.45, 869,900.84 and 343,887.53 is: 474,565.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,361.45 : 869,900.84 = 343,887.53 : x
  2. Step 2: Convert to fraction form
    630,361.45/869,900.84 = 343,887.53/x
  3. Step 3: Cross multiply
    630,361.45x = 869,900.84 × 343,887.53
  4. Step 4: Simplify right side
    630,361.45x = 299,148,054,247.00
  5. Step 5: Solve for x
    x = 299,148,054,247.00/630,361.45
  6. Step 6: Final answer
    x = 474,565.91

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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.