Home / 889,632.40-1,334,448.60-858,139.60

Finding the Fourth Proportional to 889,632.40, 1,334,448.60 and 858,139.60

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Solution

The fourth proportional to 889,632.40, 1,334,448.60 and 858,139.60 is: 1,287,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,632.40 : 1,334,448.60 = 858,139.60 : x
  2. Step 2: Convert to fraction form
    889,632.40/1,334,448.60 = 858,139.60/x
  3. Step 3: Cross multiply
    889,632.40x = 1,334,448.60 × 858,139.60
  4. Step 4: Simplify right side
    889,632.40x = 1,145,143,187,824.56
  5. Step 5: Solve for x
    x = 1,145,143,187,824.56/889,632.40
  6. Step 6: Final answer
    x = 1,287,209.40

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Double scale
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Similar ratio
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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.