Home / 464,284,179.72-640,349,491.68-287,973,313.56

Finding the Fourth Proportional to 464,284,179.72, 640,349,491.68 and 287,973,313.56

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Solution

The fourth proportional to 464,284,179.72, 640,349,491.68 and 287,973,313.56 is: 397,178,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,284,179.72 : 640,349,491.68 = 287,973,313.56 : x
  2. Step 2: Convert to fraction form
    464,284,179.72/640,349,491.68 = 287,973,313.56/x
  3. Step 3: Cross multiply
    464,284,179.72x = 640,349,491.68 × 287,973,313.56
  4. Step 4: Simplify right side
    464,284,179.72x = 184,403,564,955,551,232
  5. Step 5: Solve for x
    x = 184,403,564,955,551,232/464,284,179.72
  6. Step 6: Final answer
    x = 397,178,221.90

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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.