Home / 821,645.60-1,232,468.40-788,986.40

Finding the Fourth Proportional to 821,645.60, 1,232,468.40 and 788,986.40

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Solution

The fourth proportional to 821,645.60, 1,232,468.40 and 788,986.40 is: 1,183,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,645.60 : 1,232,468.40 = 788,986.40 : x
  2. Step 2: Convert to fraction form
    821,645.60/1,232,468.40 = 788,986.40/x
  3. Step 3: Cross multiply
    821,645.60x = 1,232,468.40 × 788,986.40
  4. Step 4: Simplify right side
    821,645.60x = 972,400,806,029.76
  5. Step 5: Solve for x
    x = 972,400,806,029.76/821,645.60
  6. Step 6: Final answer
    x = 1,183,479.60

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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.