Home / 492,621.53-679,825.27-288,623.64

Finding the Fourth Proportional to 492,621.53, 679,825.27 and 288,623.64

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Solution

The fourth proportional to 492,621.53, 679,825.27 and 288,623.64 is: 398,305.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,621.53 : 679,825.27 = 288,623.64 : x
  2. Step 2: Convert to fraction form
    492,621.53/679,825.27 = 288,623.64/x
  3. Step 3: Cross multiply
    492,621.53x = 679,825.27 × 288,623.64
  4. Step 4: Simplify right side
    492,621.53x = 196,213,643,991.38
  5. Step 5: Solve for x
    x = 196,213,643,991.38/492,621.53
  6. Step 6: Final answer
    x = 398,305.05

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1.5x scale

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.