Home / 678,456.78-1,018,151.67-235,224.78

Finding the Fourth Proportional to 678,456.78, 1,018,151.67 and 235,224.78

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Solution

The fourth proportional to 678,456.78, 1,018,151.67 and 235,224.78 is: 352,998.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,456.78 : 1,018,151.67 = 235,224.78 : x
  2. Step 2: Convert to fraction form
    678,456.78/1,018,151.67 = 235,224.78/x
  3. Step 3: Cross multiply
    678,456.78x = 1,018,151.67 × 235,224.78
  4. Step 4: Simplify right side
    678,456.78x = 239,494,502,582.38
  5. Step 5: Solve for x
    x = 239,494,502,582.38/678,456.78
  6. Step 6: Final answer
    x = 352,998.91

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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.