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Finding the Fourth Proportional to 630,431.89, 869,995.01 and 343,952.01

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Solution

The fourth proportional to 630,431.89, 869,995.01 and 343,952.01 is: 474,653.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,431.89 : 869,995.01 = 343,952.01 : x
  2. Step 2: Convert to fraction form
    630,431.89/869,995.01 = 343,952.01/x
  3. Step 3: Cross multiply
    630,431.89x = 869,995.01 × 343,952.01
  4. Step 4: Simplify right side
    630,431.89x = 299,236,532,379.47
  5. Step 5: Solve for x
    x = 299,236,532,379.47/630,431.89
  6. Step 6: Final answer
    x = 474,653.23

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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.