Home / 486,623.80-729,438.90-328,868.20

Finding the Fourth Proportional to 486,623.80, 729,438.90 and 328,868.20

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Solution

The fourth proportional to 486,623.80, 729,438.90 and 328,868.20 is: 492,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,623.80 : 729,438.90 = 328,868.20 : x
  2. Step 2: Convert to fraction form
    486,623.80/729,438.90 = 328,868.20/x
  3. Step 3: Cross multiply
    486,623.80x = 729,438.90 × 328,868.20
  4. Step 4: Simplify right side
    486,623.80x = 239,889,258,052.98
  5. Step 5: Solve for x
    x = 239,889,258,052.98/486,623.80
  6. Step 6: Final answer
    x = 492,966.55

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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.