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Finding the Fourth Proportional to 631,005.86, 870,685.38 and 372,846.91

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Solution

The fourth proportional to 631,005.86, 870,685.38 and 372,846.91 is: 514,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,005.86 : 870,685.38 = 372,846.91 : x
  2. Step 2: Convert to fraction form
    631,005.86/870,685.38 = 372,846.91/x
  3. Step 3: Cross multiply
    631,005.86x = 870,685.38 × 372,846.91
  4. Step 4: Simplify right side
    631,005.86x = 324,632,353,515.18
  5. Step 5: Solve for x
    x = 324,632,353,515.18/631,005.86
  6. Step 6: Final answer
    x = 514,468.05

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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.