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Finding the Fourth Proportional to 872,150.48, 1,203,663.56 and 499,648.80

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Solution

The fourth proportional to 872,150.48, 1,203,663.56 and 499,648.80 is: 689,570.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,150.48 : 1,203,663.56 = 499,648.80 : x
  2. Step 2: Convert to fraction form
    872,150.48/1,203,663.56 = 499,648.80/x
  3. Step 3: Cross multiply
    872,150.48x = 1,203,663.56 × 499,648.80
  4. Step 4: Simplify right side
    872,150.48x = 601,409,053,357.73
  5. Step 5: Solve for x
    x = 601,409,053,357.73/872,150.48
  6. Step 6: Final answer
    x = 689,570.28

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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.