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Finding the Fourth Proportional to 501,683.45, 692,323.16 and 300,479.45

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Solution

The fourth proportional to 501,683.45, 692,323.16 and 300,479.45 is: 414,661.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,683.45 : 692,323.16 = 300,479.45 : x
  2. Step 2: Convert to fraction form
    501,683.45/692,323.16 = 300,479.45/x
  3. Step 3: Cross multiply
    501,683.45x = 692,323.16 × 300,479.45
  4. Step 4: Simplify right side
    501,683.45x = 208,028,877,375.05
  5. Step 5: Solve for x
    x = 208,028,877,375.05/501,683.45
  6. Step 6: Final answer
    x = 414,661.63

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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.