Home / 638,140,989.41-880,632,795.53-355,883,696.22

Finding the Fourth Proportional to 638,140,989.41, 880,632,795.53 and 355,883,696.22

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Solution

The fourth proportional to 638,140,989.41, 880,632,795.53 and 355,883,696.22 is: 491,118,513.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,140,989.41 : 880,632,795.53 = 355,883,696.22 : x
  2. Step 2: Convert to fraction form
    638,140,989.41/880,632,795.53 = 355,883,696.22/x
  3. Step 3: Cross multiply
    638,140,989.41x = 880,632,795.53 × 355,883,696.22
  4. Step 4: Simplify right side
    638,140,989.41x = 313,402,854,285,767,936
  5. Step 5: Solve for x
    x = 313,402,854,285,767,936/638,140,989.41
  6. Step 6: Final answer
    x = 491,118,513.76

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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.