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Finding the Fourth Proportional to 630,405.36, 869,955.24 and 358,473.24

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Solution

The fourth proportional to 630,405.36, 869,955.24 and 358,473.24 is: 494,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,405.36 : 869,955.24 = 358,473.24 : x
  2. Step 2: Convert to fraction form
    630,405.36/869,955.24 = 358,473.24/x
  3. Step 3: Cross multiply
    630,405.36x = 869,955.24 × 358,473.24
  4. Step 4: Simplify right side
    630,405.36x = 311,855,673,537.78
  5. Step 5: Solve for x
    x = 311,855,673,537.78/630,405.36
  6. Step 6: Final answer
    x = 494,690.71

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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.