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Finding the Fourth Proportional to 644,697,106.73, 889,673,496.86 and 358,586,703.53

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Solution

The fourth proportional to 644,697,106.73, 889,673,496.86 and 358,586,703.53 is: 494,844,917.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,697,106.73 : 889,673,496.86 = 358,586,703.53 : x
  2. Step 2: Convert to fraction form
    644,697,106.73/889,673,496.86 = 358,586,703.53/x
  3. Step 3: Cross multiply
    644,697,106.73x = 889,673,496.86 × 358,586,703.53
  4. Step 4: Simplify right side
    644,697,106.73x = 319,025,086,457,035,200
  5. Step 5: Solve for x
    x = 319,025,086,457,035,200/644,697,106.73
  6. Step 6: Final answer
    x = 494,844,917.29

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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.