Home / 886,128.40-1,329,322.20-286,987.60

Finding the Fourth Proportional to 886,128.40, 1,329,322.20 and 286,987.60

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Solution

The fourth proportional to 886,128.40, 1,329,322.20 and 286,987.60 is: 430,523.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,128.40 : 1,329,322.20 = 286,987.60 : x
  2. Step 2: Convert to fraction form
    886,128.40/1,329,322.20 = 286,987.60/x
  3. Step 3: Cross multiply
    886,128.40x = 1,329,322.20 × 286,987.60
  4. Step 4: Simplify right side
    886,128.40x = 381,498,987,804.72
  5. Step 5: Solve for x
    x = 381,498,987,804.72/886,128.40
  6. Step 6: Final answer
    x = 430,523.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.