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Finding the Fourth Proportional to 631,027.80, 870,715.56 and 372,868.80

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Solution

The fourth proportional to 631,027.80, 870,715.56 and 372,868.80 is: 514,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,027.80 : 870,715.56 = 372,868.80 : x
  2. Step 2: Convert to fraction form
    631,027.80/870,715.56 = 372,868.80/x
  3. Step 3: Cross multiply
    631,027.80x = 870,715.56 × 372,868.80
  4. Step 4: Simplify right side
    631,027.80x = 324,662,665,998.53
  5. Step 5: Solve for x
    x = 324,662,665,998.53/631,027.80
  6. Step 6: Final answer
    x = 514,498.20

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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.