Home / 1,085,963.20-1,628,944.80-687,054.40

Finding the Fourth Proportional to 1,085,963.20, 1,628,944.80 and 687,054.40

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Solution

The fourth proportional to 1,085,963.20, 1,628,944.80 and 687,054.40 is: 1,030,581.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,963.20 : 1,628,944.80 = 687,054.40 : x
  2. Step 2: Convert to fraction form
    1,085,963.20/1,628,944.80 = 687,054.40/x
  3. Step 3: Cross multiply
    1,085,963.20x = 1,628,944.80 × 687,054.40
  4. Step 4: Simplify right side
    1,085,963.20x = 1,119,173,692,197.12
  5. Step 5: Solve for x
    x = 1,119,173,692,197.12/1,085,963.20
  6. Step 6: Final answer
    x = 1,030,581.60

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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.