Home / 505,290,755.18-697,328,014.10-304,410,865.59

Finding the Fourth Proportional to 505,290,755.18, 697,328,014.10 and 304,410,865.59

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Solution

The fourth proportional to 505,290,755.18, 697,328,014.10 and 304,410,865.59 is: 420,103,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,290,755.18 : 697,328,014.10 = 304,410,865.59 : x
  2. Step 2: Convert to fraction form
    505,290,755.18/697,328,014.10 = 304,410,865.59/x
  3. Step 3: Cross multiply
    505,290,755.18x = 697,328,014.10 × 304,410,865.59
  4. Step 4: Simplify right side
    505,290,755.18x = 212,274,224,370,814,656
  5. Step 5: Solve for x
    x = 212,274,224,370,814,656/505,290,755.18
  6. Step 6: Final answer
    x = 420,103,123.19

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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.