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Finding the Fourth Proportional to 545,907.20, 818,083.20 and 402,634.40

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Solution

The fourth proportional to 545,907.20, 818,083.20 and 402,634.40 is: 603,378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,907.20 : 818,083.20 = 402,634.40 : x
  2. Step 2: Convert to fraction form
    545,907.20/818,083.20 = 402,634.40/x
  3. Step 3: Cross multiply
    545,907.20x = 818,083.20 × 402,634.40
  4. Step 4: Simplify right side
    545,907.20x = 329,388,438,382.08
  5. Step 5: Solve for x
    x = 329,388,438,382.08/545,907.20
  6. Step 6: Final answer
    x = 603,378.08

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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.