Home / 679,491.47-1,019,434.04-279,926.57

Finding the Fourth Proportional to 679,491.47, 1,019,434.04 and 279,926.57

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Solution

The fourth proportional to 679,491.47, 1,019,434.04 and 279,926.57 is: 419,970.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,491.47 : 1,019,434.04 = 279,926.57 : x
  2. Step 2: Convert to fraction form
    679,491.47/1,019,434.04 = 279,926.57/x
  3. Step 3: Cross multiply
    679,491.47x = 1,019,434.04 × 279,926.57
  4. Step 4: Simplify right side
    679,491.47x = 285,366,667,661.64
  5. Step 5: Solve for x
    x = 285,366,667,661.64/679,491.47
  6. Step 6: Final answer
    x = 419,970.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.