Home / 1,018,816,375.42-1,405,971,359.33-578,807,371.90

Finding the Fourth Proportional to 1,018,816,375.42, 1,405,971,359.33 and 578,807,371.90

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Solution

The fourth proportional to 1,018,816,375.42, 1,405,971,359.33 and 578,807,371.90 is: 798,756,878.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,816,375.42 : 1,405,971,359.33 = 578,807,371.90 : x
  2. Step 2: Convert to fraction form
    1,018,816,375.42/1,405,971,359.33 = 578,807,371.90/x
  3. Step 3: Cross multiply
    1,018,816,375.42x = 1,405,971,359.33 × 578,807,371.90
  4. Step 4: Simplify right side
    1,018,816,375.42x = 813,786,587,467,638,912
  5. Step 5: Solve for x
    x = 813,786,587,467,638,912/1,018,816,375.42
  6. Step 6: Final answer
    x = 798,756,878.17

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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.