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Finding the Fourth Proportional to 625,222.56, 862,840.65 and 353,301.93

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Solution

The fourth proportional to 625,222.56, 862,840.65 and 353,301.93 is: 487,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,222.56 : 862,840.65 = 353,301.93 : x
  2. Step 2: Convert to fraction form
    625,222.56/862,840.65 = 353,301.93/x
  3. Step 3: Cross multiply
    625,222.56x = 862,840.65 × 353,301.93
  4. Step 4: Simplify right side
    625,222.56x = 304,843,266,927.46
  5. Step 5: Solve for x
    x = 304,843,266,927.46/625,222.56
  6. Step 6: Final answer
    x = 487,575.60

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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.