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Finding the Fourth Proportional to 630,847.98, 870,558.97 and 358,910.02

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Solution

The fourth proportional to 630,847.98, 870,558.97 and 358,910.02 is: 495,289.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,847.98 : 870,558.97 = 358,910.02 : x
  2. Step 2: Convert to fraction form
    630,847.98/870,558.97 = 358,910.02/x
  3. Step 3: Cross multiply
    630,847.98x = 870,558.97 × 358,910.02
  4. Step 4: Simplify right side
    630,847.98x = 312,452,337,333.88
  5. Step 5: Solve for x
    x = 312,452,337,333.88/630,847.98
  6. Step 6: Final answer
    x = 495,289.43

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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.