Home / 673,837.28-929,785.77-398,156.80

Finding the Fourth Proportional to 673,837.28, 929,785.77 and 398,156.80

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Solution

The fourth proportional to 673,837.28, 929,785.77 and 398,156.80 is: 549,391.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,837.28 : 929,785.77 = 398,156.80 : x
  2. Step 2: Convert to fraction form
    673,837.28/929,785.77 = 398,156.80/x
  3. Step 3: Cross multiply
    673,837.28x = 929,785.77 × 398,156.80
  4. Step 4: Simplify right side
    673,837.28x = 370,200,526,287.62
  5. Step 5: Solve for x
    x = 370,200,526,287.62/673,837.28
  6. Step 6: Final answer
    x = 549,391.58

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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.