Home / 1,388,479,115.37-1,916,006,845.23-761,987,899.62

Finding the Fourth Proportional to 1,388,479,115.37, 1,916,006,845.23 and 761,987,899.62

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Solution

The fourth proportional to 1,388,479,115.37, 1,916,006,845.23 and 761,987,899.62 is: 1,051,491,531.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,479,115.37 : 1,916,006,845.23 = 761,987,899.62 : x
  2. Step 2: Convert to fraction form
    1,388,479,115.37/1,916,006,845.23 = 761,987,899.62/x
  3. Step 3: Cross multiply
    1,388,479,115.37x = 1,916,006,845.23 × 761,987,899.62
  4. Step 4: Simplify right side
    1,388,479,115.37x = 1,459,974,031,654,350,080
  5. Step 5: Solve for x
    x = 1,459,974,031,654,350,080/1,388,479,115.37
  6. Step 6: Final answer
    x = 1,051,491,531.63

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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.