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Finding the Fourth Proportional to 571,853.88, 856,424.88 and 453,143.52

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Solution

The fourth proportional to 571,853.88, 856,424.88 and 453,143.52 is: 678,640.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,853.88 : 856,424.88 = 453,143.52 : x
  2. Step 2: Convert to fraction form
    571,853.88/856,424.88 = 453,143.52/x
  3. Step 3: Cross multiply
    571,853.88x = 856,424.88 × 453,143.52
  4. Step 4: Simplify right side
    571,853.88x = 388,083,384,738.78
  5. Step 5: Solve for x
    x = 388,083,384,738.78/571,853.88
  6. Step 6: Final answer
    x = 678,640.82

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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.