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Finding the Fourth Proportional to 630,440.86, 870,005.49 and 343,960.06

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Solution

The fourth proportional to 630,440.86, 870,005.49 and 343,960.06 is: 474,663.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,440.86 : 870,005.49 = 343,960.06 : x
  2. Step 2: Convert to fraction form
    630,440.86/870,005.49 = 343,960.06/x
  3. Step 3: Cross multiply
    630,440.86x = 870,005.49 × 343,960.06
  4. Step 4: Simplify right side
    630,440.86x = 299,247,140,540.73
  5. Step 5: Solve for x
    x = 299,247,140,540.73/630,440.86
  6. Step 6: Final answer
    x = 474,663.30

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1.5x scale

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.