Home / 412,128,523.80-618,192,785.70-409,258,742.40

Finding the Fourth Proportional to 412,128,523.80, 618,192,785.70 and 409,258,742.40

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Solution

The fourth proportional to 412,128,523.80, 618,192,785.70 and 409,258,742.40 is: 613,888,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,128,523.80 : 618,192,785.70 = 409,258,742.40 : x
  2. Step 2: Convert to fraction form
    412,128,523.80/618,192,785.70 = 409,258,742.40/x
  3. Step 3: Cross multiply
    412,128,523.80x = 618,192,785.70 × 409,258,742.40
  4. Step 4: Simplify right side
    412,128,523.80x = 253,000,802,036,334,720
  5. Step 5: Solve for x
    x = 253,000,802,036,334,720/412,128,523.80
  6. Step 6: Final answer
    x = 613,888,113.60

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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.