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Finding the Fourth Proportional to 630,342.93, 869,872.05 and 343,862.94

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Solution

The fourth proportional to 630,342.93, 869,872.05 and 343,862.94 is: 474,530.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,342.93 : 869,872.05 = 343,862.94 : x
  2. Step 2: Convert to fraction form
    630,342.93/869,872.05 = 343,862.94/x
  3. Step 3: Cross multiply
    630,342.93x = 869,872.05 × 343,862.94
  4. Step 4: Simplify right side
    630,342.93x = 299,116,760,536.83
  5. Step 5: Solve for x
    x = 299,116,760,536.83/630,342.93
  6. Step 6: Final answer
    x = 474,530.21

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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.