Home / 513,819,307.56-709,071,328.98-278,869,968.12

Finding the Fourth Proportional to 513,819,307.56, 709,071,328.98 and 278,869,968.12

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Solution

The fourth proportional to 513,819,307.56, 709,071,328.98 and 278,869,968.12 is: 384,840,927.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,819,307.56 : 709,071,328.98 = 278,869,968.12 : x
  2. Step 2: Convert to fraction form
    513,819,307.56/709,071,328.98 = 278,869,968.12/x
  3. Step 3: Cross multiply
    513,819,307.56x = 709,071,328.98 × 278,869,968.12
  4. Step 4: Simplify right side
    513,819,307.56x = 197,738,698,907,458,656
  5. Step 5: Solve for x
    x = 197,738,698,907,458,656/513,819,307.56
  6. Step 6: Final answer
    x = 384,840,927.54

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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.