Home / 1,375,185.60-2,062,972.80-428,457.60

Finding the Fourth Proportional to 1,375,185.60, 2,062,972.80 and 428,457.60

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Solution

The fourth proportional to 1,375,185.60, 2,062,972.80 and 428,457.60 is: 642,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,185.60 : 2,062,972.80 = 428,457.60 : x
  2. Step 2: Convert to fraction form
    1,375,185.60/2,062,972.80 = 428,457.60/x
  3. Step 3: Cross multiply
    1,375,185.60x = 2,062,972.80 × 428,457.60
  4. Step 4: Simplify right side
    1,375,185.60x = 883,896,374,753.28
  5. Step 5: Solve for x
    x = 883,896,374,753.28/1,375,185.60
  6. Step 6: Final answer
    x = 642,746.97

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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.