Home / 513,819,169.78-709,071,138.49-278,869,830.25

Finding the Fourth Proportional to 513,819,169.78, 709,071,138.49 and 278,869,830.25

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Solution

The fourth proportional to 513,819,169.78, 709,071,138.49 and 278,869,830.25 is: 384,840,737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,819,169.78 : 709,071,138.49 = 278,869,830.25 : x
  2. Step 2: Convert to fraction form
    513,819,169.78/709,071,138.49 = 278,869,830.25/x
  3. Step 3: Cross multiply
    513,819,169.78x = 709,071,138.49 × 278,869,830.25
  4. Step 4: Simplify right side
    513,819,169.78x = 197,738,548,025,880,544
  5. Step 5: Solve for x
    x = 197,738,548,025,880,544/513,819,169.78
  6. Step 6: Final answer
    x = 384,840,737.08

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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.