Home / 1,119,987,834.72-1,545,352,466.58-643,586,185.68

Finding the Fourth Proportional to 1,119,987,834.72, 1,545,352,466.58 and 643,586,185.68

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Solution

The fourth proportional to 1,119,987,834.72, 1,545,352,466.58 and 643,586,185.68 is: 888,016,341.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,987,834.72 : 1,545,352,466.58 = 643,586,185.68 : x
  2. Step 2: Convert to fraction form
    1,119,987,834.72/1,545,352,466.58 = 643,586,185.68/x
  3. Step 3: Cross multiply
    1,119,987,834.72x = 1,545,352,466.58 × 643,586,185.68
  4. Step 4: Simplify right side
    1,119,987,834.72x = 994,567,499,497,401,728
  5. Step 5: Solve for x
    x = 994,567,499,497,401,728/1,119,987,834.72
  6. Step 6: Final answer
    x = 888,016,341.49

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Double scale
Find fourth proportional to 1,119,987,835.72, 1,545,352,467.96 and 643,586,186.68
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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.