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Finding the Fourth Proportional to 804,818.76, 1,205,391.02 and 384,389.88

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Solution

The fourth proportional to 804,818.76, 1,205,391.02 and 384,389.88 is: 575,707.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,818.76 : 1,205,391.02 = 384,389.88 : x
  2. Step 2: Convert to fraction form
    804,818.76/1,205,391.02 = 384,389.88/x
  3. Step 3: Cross multiply
    804,818.76x = 1,205,391.02 × 384,389.88
  4. Step 4: Simplify right side
    804,818.76x = 463,340,109,530.88
  5. Step 5: Solve for x
    x = 463,340,109,530.88/804,818.76
  6. Step 6: Final answer
    x = 575,707.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.