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Finding the Fourth Proportional to 989,709.44, 1,365,782 and 602,384.48

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Solution

The fourth proportional to 989,709.44, 1,365,782 and 602,384.48 is: 831,280.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,709.44 : 1,365,782 = 602,384.48 : x
  2. Step 2: Convert to fraction form
    989,709.44/1,365,782 = 602,384.48/x
  3. Step 3: Cross multiply
    989,709.44x = 1,365,782 × 602,384.48
  4. Step 4: Simplify right side
    989,709.44x = 822,725,879,863.36
  5. Step 5: Solve for x
    x = 822,725,879,863.36/989,709.44
  6. Step 6: Final answer
    x = 831,280.22

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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.