Home / 1,243,446,709.10-1,715,980,343.08-678,953,972.44

Finding the Fourth Proportional to 1,243,446,709.10, 1,715,980,343.08 and 678,953,972.44

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Solution

The fourth proportional to 1,243,446,709.10, 1,715,980,343.08 and 678,953,972.44 is: 936,969,523.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,446,709.10 : 1,715,980,343.08 = 678,953,972.44 : x
  2. Step 2: Convert to fraction form
    1,243,446,709.10/1,715,980,343.08 = 678,953,972.44/x
  3. Step 3: Cross multiply
    1,243,446,709.10x = 1,715,980,343.08 × 678,953,972.44
  4. Step 4: Simplify right side
    1,243,446,709.10x = 1,165,071,670,563,120,128
  5. Step 5: Solve for x
    x = 1,165,071,670,563,120,128/1,243,446,709.10
  6. Step 6: Final answer
    x = 936,969,523.53

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Double scale
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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.