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Finding the Fourth Proportional to 612,816.84, 845,626.50 and 383,329.80

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Solution

The fourth proportional to 612,816.84, 845,626.50 and 383,329.80 is: 528,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,816.84 : 845,626.50 = 383,329.80 : x
  2. Step 2: Convert to fraction form
    612,816.84/845,626.50 = 383,329.80/x
  3. Step 3: Cross multiply
    612,816.84x = 845,626.50 × 383,329.80
  4. Step 4: Simplify right side
    612,816.84x = 324,153,837,119.70
  5. Step 5: Solve for x
    x = 324,153,837,119.70/612,816.84
  6. Step 6: Final answer
    x = 528,957.13

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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.