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Finding the Fourth Proportional to 489,239.80, 733,859.70 and 453,810.40

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Solution

The fourth proportional to 489,239.80, 733,859.70 and 453,810.40 is: 680,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,239.80 : 733,859.70 = 453,810.40 : x
  2. Step 2: Convert to fraction form
    489,239.80/733,859.70 = 453,810.40/x
  3. Step 3: Cross multiply
    489,239.80x = 733,859.70 × 453,810.40
  4. Step 4: Simplify right side
    489,239.80x = 333,033,164,000.88
  5. Step 5: Solve for x
    x = 333,033,164,000.88/489,239.80
  6. Step 6: Final answer
    x = 680,715.60

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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.