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Finding the Fourth Proportional to 631,042.64, 870,835.40 and 344,560.68

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Solution

The fourth proportional to 631,042.64, 870,835.40 and 344,560.68 is: 475,491.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,042.64 : 870,835.40 = 344,560.68 : x
  2. Step 2: Convert to fraction form
    631,042.64/870,835.40 = 344,560.68/x
  3. Step 3: Cross multiply
    631,042.64x = 870,835.40 × 344,560.68
  4. Step 4: Simplify right side
    631,042.64x = 300,055,637,592.07
  5. Step 5: Solve for x
    x = 300,055,637,592.07/631,042.64
  6. Step 6: Final answer
    x = 475,491.86

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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.