Home / 718,942.49-992,018.69-428,548.85

Finding the Fourth Proportional to 718,942.49, 992,018.69 and 428,548.85

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Solution

The fourth proportional to 718,942.49, 992,018.69 and 428,548.85 is: 591,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,942.49 : 992,018.69 = 428,548.85 : x
  2. Step 2: Convert to fraction form
    718,942.49/992,018.69 = 428,548.85/x
  3. Step 3: Cross multiply
    718,942.49x = 992,018.69 × 428,548.85
  4. Step 4: Simplify right side
    718,942.49x = 425,128,468,778.01
  5. Step 5: Solve for x
    x = 425,128,468,778.01/718,942.49
  6. Step 6: Final answer
    x = 591,324.72

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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.