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Finding the Fourth Proportional to 489,390.30, 734,085.46 and 347,672.70

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Solution

The fourth proportional to 489,390.30, 734,085.46 and 347,672.70 is: 521,509.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,390.30 : 734,085.46 = 347,672.70 : x
  2. Step 2: Convert to fraction form
    489,390.30/734,085.46 = 347,672.70/x
  3. Step 3: Cross multiply
    489,390.30x = 734,085.46 × 347,672.70
  4. Step 4: Simplify right side
    489,390.30x = 255,221,473,908.94
  5. Step 5: Solve for x
    x = 255,221,473,908.94/489,390.30
  6. Step 6: Final answer
    x = 521,509.06

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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.