Home / 642,204.96-886,272.02-355,725.01

Finding the Fourth Proportional to 642,204.96, 886,272.02 and 355,725.01

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Solution

The fourth proportional to 642,204.96, 886,272.02 and 355,725.01 is: 490,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,204.96 : 886,272.02 = 355,725.01 : x
  2. Step 2: Convert to fraction form
    642,204.96/886,272.02 = 355,725.01/x
  3. Step 3: Cross multiply
    642,204.96x = 886,272.02 × 355,725.01
  4. Step 4: Simplify right side
    642,204.96x = 315,269,123,177.22
  5. Step 5: Solve for x
    x = 315,269,123,177.22/642,204.96
  6. Step 6: Final answer
    x = 490,916.67

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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.