Home / 918,583.20-1,268,263.36-821,485.76

Finding the Fourth Proportional to 918,583.20, 1,268,263.36 and 821,485.76

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Solution

The fourth proportional to 918,583.20, 1,268,263.36 and 821,485.76 is: 1,134,203.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,583.20 : 1,268,263.36 = 821,485.76 : x
  2. Step 2: Convert to fraction form
    918,583.20/1,268,263.36 = 821,485.76/x
  3. Step 3: Cross multiply
    918,583.20x = 1,268,263.36 × 821,485.76
  4. Step 4: Simplify right side
    918,583.20x = 1,041,860,290,169.75
  5. Step 5: Solve for x
    x = 1,041,860,290,169.75/918,583.20
  6. Step 6: Final answer
    x = 1,134,203.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.