Home / 1,420,658.40-2,130,987.60-889,816.80

Finding the Fourth Proportional to 1,420,658.40, 2,130,987.60 and 889,816.80

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Solution

The fourth proportional to 1,420,658.40, 2,130,987.60 and 889,816.80 is: 1,334,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,658.40 : 2,130,987.60 = 889,816.80 : x
  2. Step 2: Convert to fraction form
    1,420,658.40/2,130,987.60 = 889,816.80/x
  3. Step 3: Cross multiply
    1,420,658.40x = 2,130,987.60 × 889,816.80
  4. Step 4: Simplify right side
    1,420,658.40x = 1,896,188,567,071.68
  5. Step 5: Solve for x
    x = 1,896,188,567,071.68/1,420,658.40
  6. Step 6: Final answer
    x = 1,334,725.20

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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.