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Finding the Fourth Proportional to 631,055.61, 870,853.28 and 344,573.66

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Solution

The fourth proportional to 631,055.61, 870,853.28 and 344,573.66 is: 475,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,055.61 : 870,853.28 = 344,573.66 : x
  2. Step 2: Convert to fraction form
    631,055.61/870,853.28 = 344,573.66/x
  3. Step 3: Cross multiply
    631,055.61x = 870,853.28 × 344,573.66
  4. Step 4: Simplify right side
    631,055.61x = 300,073,102,466.87
  5. Step 5: Solve for x
    x = 300,073,102,466.87/631,055.61
  6. Step 6: Final answer
    x = 475,509.76

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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.