Home / 499,275.88-689,000.70-272,921.38

Finding the Fourth Proportional to 499,275.88, 689,000.70 and 272,921.38

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Solution

The fourth proportional to 499,275.88, 689,000.70 and 272,921.38 is: 376,631.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,275.88 : 689,000.70 = 272,921.38 : x
  2. Step 2: Convert to fraction form
    499,275.88/689,000.70 = 272,921.38/x
  3. Step 3: Cross multiply
    499,275.88x = 689,000.70 × 272,921.38
  4. Step 4: Simplify right side
    499,275.88x = 188,043,021,864.97
  5. Step 5: Solve for x
    x = 188,043,021,864.97/499,275.88
  6. Step 6: Final answer
    x = 376,631.50

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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.