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Finding the Fourth Proportional to 489,342.30, 734,013.45 and 347,624.70

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Solution

The fourth proportional to 489,342.30, 734,013.45 and 347,624.70 is: 521,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,342.30 : 734,013.45 = 347,624.70 : x
  2. Step 2: Convert to fraction form
    489,342.30/734,013.45 = 347,624.70/x
  3. Step 3: Cross multiply
    489,342.30x = 734,013.45 × 347,624.70
  4. Step 4: Simplify right side
    489,342.30x = 255,161,205,352.22
  5. Step 5: Solve for x
    x = 255,161,205,352.22/489,342.30
  6. Step 6: Final answer
    x = 521,437.05

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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.