Home / 720,193.02-993,876.80-397,910.54

Finding the Fourth Proportional to 720,193.02, 993,876.80 and 397,910.54

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Solution

The fourth proportional to 720,193.02, 993,876.80 and 397,910.54 is: 549,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,193.02 : 993,876.80 = 397,910.54 : x
  2. Step 2: Convert to fraction form
    720,193.02/993,876.80 = 397,910.54/x
  3. Step 3: Cross multiply
    720,193.02x = 993,876.80 × 397,910.54
  4. Step 4: Simplify right side
    720,193.02x = 395,474,047,222.54
  5. Step 5: Solve for x
    x = 395,474,047,222.54/720,193.02
  6. Step 6: Final answer
    x = 549,122.30

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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.