Home / 390,388,828.36-585,680,163.03-193,744,531.30

Finding the Fourth Proportional to 390,388,828.36, 585,680,163.03 and 193,744,531.30

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Solution

The fourth proportional to 390,388,828.36, 585,680,163.03 and 193,744,531.30 is: 290,664,897.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,388,828.36 : 585,680,163.03 = 193,744,531.30 : x
  2. Step 2: Convert to fraction form
    390,388,828.36/585,680,163.03 = 193,744,531.30/x
  3. Step 3: Cross multiply
    390,388,828.36x = 585,680,163.03 × 193,744,531.30
  4. Step 4: Simplify right side
    390,388,828.36x = 113,472,328,677,954,944
  5. Step 5: Solve for x
    x = 113,472,328,677,954,944/390,388,828.36
  6. Step 6: Final answer
    x = 290,664,897.24

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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.