Home / 642,362.34-886,425.02-355,865.34

Finding the Fourth Proportional to 642,362.34, 886,425.02 and 355,865.34

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Solution

The fourth proportional to 642,362.34, 886,425.02 and 355,865.34 is: 491,074.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,362.34 : 886,425.02 = 355,865.34 : x
  2. Step 2: Convert to fraction form
    642,362.34/886,425.02 = 355,865.34/x
  3. Step 3: Cross multiply
    642,362.34x = 886,425.02 × 355,865.34
  4. Step 4: Simplify right side
    642,362.34x = 315,447,941,126.81
  5. Step 5: Solve for x
    x = 315,447,941,126.81/642,362.34
  6. Step 6: Final answer
    x = 491,074.77

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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.