Home / 1,231,389,705.62-1,699,296,791.07-666,870,000.18

Finding the Fourth Proportional to 1,231,389,705.62, 1,699,296,791.07 and 666,870,000.18

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Solution

The fourth proportional to 1,231,389,705.62, 1,699,296,791.07 and 666,870,000.18 is: 920,269,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,389,705.62 : 1,699,296,791.07 = 666,870,000.18 : x
  2. Step 2: Convert to fraction form
    1,231,389,705.62/1,699,296,791.07 = 666,870,000.18/x
  3. Step 3: Cross multiply
    1,231,389,705.62x = 1,699,296,791.07 × 666,870,000.18
  4. Step 4: Simplify right side
    1,231,389,705.62x = 1,133,210,051,360,351,872
  5. Step 5: Solve for x
    x = 1,133,210,051,360,351,872/1,231,389,705.62
  6. Step 6: Final answer
    x = 920,269,226.05

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Double scale
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1.5x scale

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.