Home / 528,660,709.63-729,509,007.89-305,656,699.10

Finding the Fourth Proportional to 528,660,709.63, 729,509,007.89 and 305,656,699.10

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Solution

The fourth proportional to 528,660,709.63, 729,509,007.89 and 305,656,699.10 is: 421,781,515.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,660,709.63 : 729,509,007.89 = 305,656,699.10 : x
  2. Step 2: Convert to fraction form
    528,660,709.63/729,509,007.89 = 305,656,699.10/x
  3. Step 3: Cross multiply
    528,660,709.63x = 729,509,007.89 × 305,656,699.10
  4. Step 4: Simplify right side
    528,660,709.63x = 222,979,315,313,844,992
  5. Step 5: Solve for x
    x = 222,979,315,313,844,992/528,660,709.63
  6. Step 6: Final answer
    x = 421,781,515.54

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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.