Home / 412,128,514.80-618,192,772.20-409,258,733.40

Finding the Fourth Proportional to 412,128,514.80, 618,192,772.20 and 409,258,733.40

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Solution

The fourth proportional to 412,128,514.80, 618,192,772.20 and 409,258,733.40 is: 613,888,100.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,128,514.80 : 618,192,772.20 = 409,258,733.40 : x
  2. Step 2: Convert to fraction form
    412,128,514.80/618,192,772.20 = 409,258,733.40/x
  3. Step 3: Cross multiply
    412,128,514.80x = 618,192,772.20 × 409,258,733.40
  4. Step 4: Simplify right side
    412,128,514.80x = 253,000,790,947,606,752
  5. Step 5: Solve for x
    x = 253,000,790,947,606,752/412,128,514.80
  6. Step 6: Final answer
    x = 613,888,100.10

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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.