Home / 412,128,821.80-618,193,232.70-409,259,040.40

Finding the Fourth Proportional to 412,128,821.80, 618,193,232.70 and 409,259,040.40

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Solution

The fourth proportional to 412,128,821.80, 618,193,232.70 and 409,259,040.40 is: 613,888,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,128,821.80 : 618,193,232.70 = 409,259,040.40 : x
  2. Step 2: Convert to fraction form
    412,128,821.80/618,193,232.70 = 409,259,040.40/x
  3. Step 3: Cross multiply
    412,128,821.80x = 618,193,232.70 × 409,259,040.40
  4. Step 4: Simplify right side
    412,128,821.80x = 253,001,169,196,575,904
  5. Step 5: Solve for x
    x = 253,001,169,196,575,904/412,128,821.80
  6. Step 6: Final answer
    x = 613,888,560.60

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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.