Home / 642,013.36-886,006.28-355,533.44

Finding the Fourth Proportional to 642,013.36, 886,006.28 and 355,533.44

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Solution

The fourth proportional to 642,013.36, 886,006.28 and 355,533.44 is: 490,651.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,013.36 : 886,006.28 = 355,533.44 : x
  2. Step 2: Convert to fraction form
    642,013.36/886,006.28 = 355,533.44/x
  3. Step 3: Cross multiply
    642,013.36x = 886,006.28 × 355,533.44
  4. Step 4: Simplify right side
    642,013.36x = 315,004,863,402.55
  5. Step 5: Solve for x
    x = 315,004,863,402.55/642,013.36
  6. Step 6: Final answer
    x = 490,651.57

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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.