Home / 405,978,018.76-560,255,040.66-220,341,259.72

Finding the Fourth Proportional to 405,978,018.76, 560,255,040.66 and 220,341,259.72

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Solution

The fourth proportional to 405,978,018.76, 560,255,040.66 and 220,341,259.72 is: 304,073,855.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,978,018.76 : 560,255,040.66 = 220,341,259.72 : x
  2. Step 2: Convert to fraction form
    405,978,018.76/560,255,040.66 = 220,341,259.72/x
  3. Step 3: Cross multiply
    405,978,018.76x = 560,255,040.66 × 220,341,259.72
  4. Step 4: Simplify right side
    405,978,018.76x = 123,447,301,423,504,208
  5. Step 5: Solve for x
    x = 123,447,301,423,504,208/405,978,018.76
  6. Step 6: Final answer
    x = 304,073,855.53

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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.