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Finding the Fourth Proportional to 631,034.62, 870,385.91 and 426,995.73

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Solution

The fourth proportional to 631,034.62, 870,385.91 and 426,995.73 is: 588,955.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,034.62 : 870,385.91 = 426,995.73 : x
  2. Step 2: Convert to fraction form
    631,034.62/870,385.91 = 426,995.73/x
  3. Step 3: Cross multiply
    631,034.62x = 870,385.91 × 426,995.73
  4. Step 4: Simplify right side
    631,034.62x = 371,651,064,887.19
  5. Step 5: Solve for x
    x = 371,651,064,887.19/631,034.62
  6. Step 6: Final answer
    x = 588,955.11

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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.