Home / 685,968,020.76-1,028,431,350.18-353,616,891.60

Finding the Fourth Proportional to 685,968,020.76, 1,028,431,350.18 and 353,616,891.60

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Solution

The fourth proportional to 685,968,020.76, 1,028,431,350.18 and 353,616,891.60 is: 530,156,926.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,968,020.76 : 1,028,431,350.18 = 353,616,891.60 : x
  2. Step 2: Convert to fraction form
    685,968,020.76/1,028,431,350.18 = 353,616,891.60/x
  3. Step 3: Cross multiply
    685,968,020.76x = 1,028,431,350.18 × 353,616,891.60
  4. Step 4: Simplify right side
    685,968,020.76x = 363,670,697,274,642,688
  5. Step 5: Solve for x
    x = 363,670,697,274,642,688/685,968,020.76
  6. Step 6: Final answer
    x = 530,156,926.08

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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.