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Finding the Fourth Proportional to 579,710.40, 869,954.40 and 342,801.60

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Solution

The fourth proportional to 579,710.40, 869,954.40 and 342,801.60 is: 514,432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,710.40 : 869,954.40 = 342,801.60 : x
  2. Step 2: Convert to fraction form
    579,710.40/869,954.40 = 342,801.60/x
  3. Step 3: Cross multiply
    579,710.40x = 869,954.40 × 342,801.60
  4. Step 4: Simplify right side
    579,710.40x = 298,221,760,247.04
  5. Step 5: Solve for x
    x = 298,221,760,247.04/579,710.40
  6. Step 6: Final answer
    x = 514,432.31

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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.