Home / 499,315.38-689,055.22-272,960.88

Finding the Fourth Proportional to 499,315.38, 689,055.22 and 272,960.88

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Solution

The fourth proportional to 499,315.38, 689,055.22 and 272,960.88 is: 376,686.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,315.38 : 689,055.22 = 272,960.88 : x
  2. Step 2: Convert to fraction form
    499,315.38/689,055.22 = 272,960.88/x
  3. Step 3: Cross multiply
    499,315.38x = 689,055.22 × 272,960.88
  4. Step 4: Simplify right side
    499,315.38x = 188,085,119,219.79
  5. Step 5: Solve for x
    x = 188,085,119,219.79/499,315.38
  6. Step 6: Final answer
    x = 376,686.01

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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.