Home / 290,325,412.80-435,488,119.20-74,914,660.80

Finding the Fourth Proportional to 290,325,412.80, 435,488,119.20 and 74,914,660.80

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Solution

The fourth proportional to 290,325,412.80, 435,488,119.20 and 74,914,660.80 is: 112,371,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,325,412.80 : 435,488,119.20 = 74,914,660.80 : x
  2. Step 2: Convert to fraction form
    290,325,412.80/435,488,119.20 = 74,914,660.80/x
  3. Step 3: Cross multiply
    290,325,412.80x = 435,488,119.20 × 74,914,660.80
  4. Step 4: Simplify right side
    290,325,412.80x = 32,624,444,732,297,964
  5. Step 5: Solve for x
    x = 32,624,444,732,297,964/290,325,412.80
  6. Step 6: Final answer
    x = 112,371,991.20

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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.