Home / 662,638,220.40-993,947,999.40-299,131,993.20

Finding the Fourth Proportional to 662,638,220.40, 993,947,999.40 and 299,131,993.20

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Solution

The fourth proportional to 662,638,220.40, 993,947,999.40 and 299,131,993.20 is: 448,693,777.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,638,220.40 : 993,947,999.40 = 299,131,993.20 : x
  2. Step 2: Convert to fraction form
    662,638,220.40/993,947,999.40 = 299,131,993.20/x
  3. Step 3: Cross multiply
    662,638,220.40x = 993,947,999.40 × 299,131,993.20
  4. Step 4: Simplify right side
    662,638,220.40x = 297,321,646,197,674,368
  5. Step 5: Solve for x
    x = 297,321,646,197,674,368/662,638,220.40
  6. Step 6: Final answer
    x = 448,693,777.46

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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.