Home / 485,917,284.42-728,725,941.87-140,896,339.38

Finding the Fourth Proportional to 485,917,284.42, 728,725,941.87 and 140,896,339.38

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Solution

The fourth proportional to 485,917,284.42, 728,725,941.87 and 140,896,339.38 is: 211,301,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,917,284.42 : 728,725,941.87 = 140,896,339.38 : x
  2. Step 2: Convert to fraction form
    485,917,284.42/728,725,941.87 = 140,896,339.38/x
  3. Step 3: Cross multiply
    485,917,284.42x = 728,725,941.87 × 140,896,339.38
  4. Step 4: Simplify right side
    485,917,284.42x = 102,674,817,620,725,664
  5. Step 5: Solve for x
    x = 102,674,817,620,725,664/485,917,284.42
  6. Step 6: Final answer
    x = 211,301,019.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.