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Finding the Fourth Proportional to 630,797.11, 870,469.60 and 358,839.40

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Solution

The fourth proportional to 630,797.11, 870,469.60 and 358,839.40 is: 495,181.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,797.11 : 870,469.60 = 358,839.40 : x
  2. Step 2: Convert to fraction form
    630,797.11/870,469.60 = 358,839.40/x
  3. Step 3: Cross multiply
    630,797.11x = 870,469.60 × 358,839.40
  4. Step 4: Simplify right side
    630,797.11x = 312,358,788,982.24
  5. Step 5: Solve for x
    x = 312,358,788,982.24/630,797.11
  6. Step 6: Final answer
    x = 495,181.07

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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.