Home / 502,429.87-693,076.39-318,331.63

Finding the Fourth Proportional to 502,429.87, 693,076.39 and 318,331.63

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Solution

The fourth proportional to 502,429.87, 693,076.39 and 318,331.63 is: 439,122.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,429.87 : 693,076.39 = 318,331.63 : x
  2. Step 2: Convert to fraction form
    502,429.87/693,076.39 = 318,331.63/x
  3. Step 3: Cross multiply
    502,429.87x = 693,076.39 × 318,331.63
  4. Step 4: Simplify right side
    502,429.87x = 220,628,136,943.22
  5. Step 5: Solve for x
    x = 220,628,136,943.22/502,429.87
  6. Step 6: Final answer
    x = 439,122.25

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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.