Home / 813,699.60-1,220,743.80-392,629.20

Finding the Fourth Proportional to 813,699.60, 1,220,743.80 and 392,629.20

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Solution

The fourth proportional to 813,699.60, 1,220,743.80 and 392,629.20 is: 589,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,699.60 : 1,220,743.80 = 392,629.20 : x
  2. Step 2: Convert to fraction form
    813,699.60/1,220,743.80 = 392,629.20/x
  3. Step 3: Cross multiply
    813,699.60x = 1,220,743.80 × 392,629.20
  4. Step 4: Simplify right side
    813,699.60x = 479,299,661,598.96
  5. Step 5: Solve for x
    x = 479,299,661,598.96/813,699.60
  6. Step 6: Final answer
    x = 589,037.60

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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.