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Finding the Fourth Proportional to 630,336.17, 869,905.02 and 358,429.37

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Solution

The fourth proportional to 630,336.17, 869,905.02 and 358,429.37 is: 494,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,336.17 : 869,905.02 = 358,429.37 : x
  2. Step 2: Convert to fraction form
    630,336.17/869,905.02 = 358,429.37/x
  3. Step 3: Cross multiply
    630,336.17x = 869,905.02 × 358,429.37
  4. Step 4: Simplify right side
    630,336.17x = 311,799,503,928.91
  5. Step 5: Solve for x
    x = 311,799,503,928.91/630,336.17
  6. Step 6: Final answer
    x = 494,655.90

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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.