Home / 405,578,036.08-559,697,984.76-219,939,004.72

Finding the Fourth Proportional to 405,578,036.08, 559,697,984.76 and 219,939,004.72

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Solution

The fourth proportional to 405,578,036.08, 559,697,984.76 and 219,939,004.72 is: 303,515,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,578,036.08 : 559,697,984.76 = 219,939,004.72 : x
  2. Step 2: Convert to fraction form
    405,578,036.08/559,697,984.76 = 219,939,004.72/x
  3. Step 3: Cross multiply
    405,578,036.08x = 559,697,984.76 × 219,939,004.72
  4. Step 4: Simplify right side
    405,578,036.08x = 123,099,417,711,904,128
  5. Step 5: Solve for x
    x = 123,099,417,711,904,128/405,578,036.08
  6. Step 6: Final answer
    x = 303,515,986.47

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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.