Home / 853,388,034.80-1,280,082,052.20-638,397,186.80

Finding the Fourth Proportional to 853,388,034.80, 1,280,082,052.20 and 638,397,186.80

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Solution

The fourth proportional to 853,388,034.80, 1,280,082,052.20 and 638,397,186.80 is: 957,595,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,388,034.80 : 1,280,082,052.20 = 638,397,186.80 : x
  2. Step 2: Convert to fraction form
    853,388,034.80/1,280,082,052.20 = 638,397,186.80/x
  3. Step 3: Cross multiply
    853,388,034.80x = 1,280,082,052.20 × 638,397,186.80
  4. Step 4: Simplify right side
    853,388,034.80x = 817,200,780,997,650,688
  5. Step 5: Solve for x
    x = 817,200,780,997,650,688/853,388,034.80
  6. Step 6: Final answer
    x = 957,595,780.20

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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.