Home / 678,810.78-1,018,200.36-341,760.93

Finding the Fourth Proportional to 678,810.78, 1,018,200.36 and 341,760.93

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Solution

The fourth proportional to 678,810.78, 1,018,200.36 and 341,760.93 is: 512,633.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,810.78 : 1,018,200.36 = 341,760.93 : x
  2. Step 2: Convert to fraction form
    678,810.78/1,018,200.36 = 341,760.93/x
  3. Step 3: Cross multiply
    678,810.78x = 1,018,200.36 × 341,760.93
  4. Step 4: Simplify right side
    678,810.78x = 347,981,101,959.94
  5. Step 5: Solve for x
    x = 347,981,101,959.94/678,810.78
  6. Step 6: Final answer
    x = 512,633.44

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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.