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Finding the Fourth Proportional to 630,090.52, 869,576.58 and 358,243.72

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Solution

The fourth proportional to 630,090.52, 869,576.58 and 358,243.72 is: 494,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,090.52 : 869,576.58 = 358,243.72 : x
  2. Step 2: Convert to fraction form
    630,090.52/869,576.58 = 358,243.72/x
  3. Step 3: Cross multiply
    630,090.52x = 869,576.58 × 358,243.72
  4. Step 4: Simplify right side
    630,090.52x = 311,520,346,670.14
  5. Step 5: Solve for x
    x = 311,520,346,670.14/630,090.52
  6. Step 6: Final answer
    x = 494,405.71

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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.