Home / 405,808,515.84-559,670,333.58-282,344,142.72

Finding the Fourth Proportional to 405,808,515.84, 559,670,333.58 and 282,344,142.72

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Solution

The fourth proportional to 405,808,515.84, 559,670,333.58 and 282,344,142.72 is: 389,394,589.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,808,515.84 : 559,670,333.58 = 282,344,142.72 : x
  2. Step 2: Convert to fraction form
    405,808,515.84/559,670,333.58 = 282,344,142.72/x
  3. Step 3: Cross multiply
    405,808,515.84x = 559,670,333.58 × 282,344,142.72
  4. Step 4: Simplify right side
    405,808,515.84x = 158,019,640,540,461,568
  5. Step 5: Solve for x
    x = 158,019,640,540,461,568/405,808,515.84
  6. Step 6: Final answer
    x = 389,394,589.74

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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.