Home / 513,819,173.84-709,071,144.09-278,869,834.31

Finding the Fourth Proportional to 513,819,173.84, 709,071,144.09 and 278,869,834.31

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Solution

The fourth proportional to 513,819,173.84, 709,071,144.09 and 278,869,834.31 is: 384,840,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,819,173.84 : 709,071,144.09 = 278,869,834.31 : x
  2. Step 2: Convert to fraction form
    513,819,173.84/709,071,144.09 = 278,869,834.31/x
  3. Step 3: Cross multiply
    513,819,173.84x = 709,071,144.09 × 278,869,834.31
  4. Step 4: Simplify right side
    513,819,173.84x = 197,738,552,467,343,104
  5. Step 5: Solve for x
    x = 197,738,552,467,343,104/513,819,173.84
  6. Step 6: Final answer
    x = 384,840,742.69

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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.