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Finding the Fourth Proportional to 802,806.90, 1,106,801.76 and 637,782.41

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Solution

The fourth proportional to 802,806.90, 1,106,801.76 and 637,782.41 is: 879,288.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,806.90 : 1,106,801.76 = 637,782.41 : x
  2. Step 2: Convert to fraction form
    802,806.90/1,106,801.76 = 637,782.41/x
  3. Step 3: Cross multiply
    802,806.90x = 1,106,801.76 × 637,782.41
  4. Step 4: Simplify right side
    802,806.90x = 705,898,695,930.85
  5. Step 5: Solve for x
    x = 705,898,695,930.85/802,806.90
  6. Step 6: Final answer
    x = 879,288.28

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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.