Home / 910,938,778.40-1,367,042,477.06-320,776,554.04

Finding the Fourth Proportional to 910,938,778.40, 1,367,042,477.06 and 320,776,554.04

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Solution

The fourth proportional to 910,938,778.40, 1,367,042,477.06 and 320,776,554.04 is: 481,388,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,938,778.40 : 1,367,042,477.06 = 320,776,554.04 : x
  2. Step 2: Convert to fraction form
    910,938,778.40/1,367,042,477.06 = 320,776,554.04/x
  3. Step 3: Cross multiply
    910,938,778.40x = 1,367,042,477.06 × 320,776,554.04
  4. Step 4: Simplify right side
    910,938,778.40x = 438,515,175,014,996,928
  5. Step 5: Solve for x
    x = 438,515,175,014,996,928/910,938,778.40
  6. Step 6: Final answer
    x = 481,388,195.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.