Home / 385,287,200.20-578,874,518.70-289,735,712.20

Finding the Fourth Proportional to 385,287,200.20, 578,874,518.70 and 289,735,712.20

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Solution

The fourth proportional to 385,287,200.20, 578,874,518.70 and 289,735,712.20 is: 435,313,243.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,287,200.20 : 578,874,518.70 = 289,735,712.20 : x
  2. Step 2: Convert to fraction form
    385,287,200.20/578,874,518.70 = 289,735,712.20/x
  3. Step 3: Cross multiply
    385,287,200.20x = 578,874,518.70 × 289,735,712.20
  4. Step 4: Simplify right side
    385,287,200.20x = 167,720,620,949,976,736
  5. Step 5: Solve for x
    x = 167,720,620,949,976,736/385,287,200.20
  6. Step 6: Final answer
    x = 435,313,243.89

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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.