Home / 499,122.84-688,789.80-272,768.32

Finding the Fourth Proportional to 499,122.84, 688,789.80 and 272,768.32

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Solution

The fourth proportional to 499,122.84, 688,789.80 and 272,768.32 is: 376,420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,122.84 : 688,789.80 = 272,768.32 : x
  2. Step 2: Convert to fraction form
    499,122.84/688,789.80 = 272,768.32/x
  3. Step 3: Cross multiply
    499,122.84x = 688,789.80 × 272,768.32
  4. Step 4: Simplify right side
    499,122.84x = 187,880,036,579.14
  5. Step 5: Solve for x
    x = 187,880,036,579.14/499,122.84
  6. Step 6: Final answer
    x = 376,420.44

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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.