Home / 499,569.77-688,566.61-378,672.41

Finding the Fourth Proportional to 499,569.77, 688,566.61 and 378,672.41

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Solution

The fourth proportional to 499,569.77, 688,566.61 and 378,672.41 is: 521,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,569.77 : 688,566.61 = 378,672.41 : x
  2. Step 2: Convert to fraction form
    499,569.77/688,566.61 = 378,672.41/x
  3. Step 3: Cross multiply
    499,569.77x = 688,566.61 × 378,672.41
  4. Step 4: Simplify right side
    499,569.77x = 260,741,177,654.23
  5. Step 5: Solve for x
    x = 260,741,177,654.23/499,569.77
  6. Step 6: Final answer
    x = 521,931.46

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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.