Home / 818,775.40-1,228,335.90-257,866.60

Finding the Fourth Proportional to 818,775.40, 1,228,335.90 and 257,866.60

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Solution

The fourth proportional to 818,775.40, 1,228,335.90 and 257,866.60 is: 386,854.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,775.40 : 1,228,335.90 = 257,866.60 : x
  2. Step 2: Convert to fraction form
    818,775.40/1,228,335.90 = 257,866.60/x
  3. Step 3: Cross multiply
    818,775.40x = 1,228,335.90 × 257,866.60
  4. Step 4: Simplify right side
    818,775.40x = 316,746,802,190.94
  5. Step 5: Solve for x
    x = 316,746,802,190.94/818,775.40
  6. Step 6: Final answer
    x = 386,854.32

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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.