Home / 878,420.24-1,317,616.48-279,372.76

Finding the Fourth Proportional to 878,420.24, 1,317,616.48 and 279,372.76

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Solution

The fourth proportional to 878,420.24, 1,317,616.48 and 279,372.76 is: 419,054.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,420.24 : 1,317,616.48 = 279,372.76 : x
  2. Step 2: Convert to fraction form
    878,420.24/1,317,616.48 = 279,372.76/x
  3. Step 3: Cross multiply
    878,420.24x = 1,317,616.48 × 279,372.76
  4. Step 4: Simplify right side
    878,420.24x = 368,106,152,639.09
  5. Step 5: Solve for x
    x = 368,106,152,639.09/878,420.24
  6. Step 6: Final answer
    x = 419,054.73

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1.5x scale

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.