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Finding the Fourth Proportional to 543,978,479.70, 750,716,917.83 and 305,898,593.58

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Solution

The fourth proportional to 543,978,479.70, 750,716,917.83 and 305,898,593.58 is: 422,155,026.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,978,479.70 : 750,716,917.83 = 305,898,593.58 : x
  2. Step 2: Convert to fraction form
    543,978,479.70/750,716,917.83 = 305,898,593.58/x
  3. Step 3: Cross multiply
    543,978,479.70x = 750,716,917.83 × 305,898,593.58
  4. Step 4: Simplify right side
    543,978,479.70x = 229,643,249,340,909,440
  5. Step 5: Solve for x
    x = 229,643,249,340,909,440/543,978,479.70
  6. Step 6: Final answer
    x = 422,155,026.18

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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.