Home / 656,596.20-905,948.49-398,467.38

Finding the Fourth Proportional to 656,596.20, 905,948.49 and 398,467.38

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Solution

The fourth proportional to 656,596.20, 905,948.49 and 398,467.38 is: 549,791.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,596.20 : 905,948.49 = 398,467.38 : x
  2. Step 2: Convert to fraction form
    656,596.20/905,948.49 = 398,467.38/x
  3. Step 3: Cross multiply
    656,596.20x = 905,948.49 × 398,467.38
  4. Step 4: Simplify right side
    656,596.20x = 360,990,921,225.26
  5. Step 5: Solve for x
    x = 360,990,921,225.26/656,596.20
  6. Step 6: Final answer
    x = 549,791.37

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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.