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Finding the Fourth Proportional to 628,300.80, 941,068.80 and 545,356.80

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Solution

The fourth proportional to 628,300.80, 941,068.80 and 545,356.80 is: 816,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,300.80 : 941,068.80 = 545,356.80 : x
  2. Step 2: Convert to fraction form
    628,300.80/941,068.80 = 545,356.80/x
  3. Step 3: Cross multiply
    628,300.80x = 941,068.80 × 545,356.80
  4. Step 4: Simplify right side
    628,300.80x = 513,218,269,347.84
  5. Step 5: Solve for x
    x = 513,218,269,347.84/628,300.80
  6. Step 6: Final answer
    x = 816,835.30

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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.