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Finding the Fourth Proportional to 879,804, 1,214,129.52 and 477,396

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Solution

The fourth proportional to 879,804, 1,214,129.52 and 477,396 is: 658,806.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,804 : 1,214,129.52 = 477,396 : x
  2. Step 2: Convert to fraction form
    879,804/1,214,129.52 = 477,396/x
  3. Step 3: Cross multiply
    879,804x = 1,214,129.52 × 477,396
  4. Step 4: Simplify right side
    879,804x = 579,620,576,329.92
  5. Step 5: Solve for x
    x = 579,620,576,329.92/879,804
  6. Step 6: Final answer
    x = 658,806.48

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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.