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Finding the Fourth Proportional to 543,790.33, 750,128.38 and 505,302.49

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Solution

The fourth proportional to 543,790.33, 750,128.38 and 505,302.49 is: 697,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,790.33 : 750,128.38 = 505,302.49 : x
  2. Step 2: Convert to fraction form
    543,790.33/750,128.38 = 505,302.49/x
  3. Step 3: Cross multiply
    543,790.33x = 750,128.38 × 505,302.49
  4. Step 4: Simplify right side
    543,790.33x = 379,041,738,233.67
  5. Step 5: Solve for x
    x = 379,041,738,233.67/543,790.33
  6. Step 6: Final answer
    x = 697,036.55

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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.