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Finding the Fourth Proportional to 545,853.66, 818,928.72 and 309,362.42

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Solution

The fourth proportional to 545,853.66, 818,928.72 and 309,362.42 is: 464,127.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,853.66 : 818,928.72 = 309,362.42 : x
  2. Step 2: Convert to fraction form
    545,853.66/818,928.72 = 309,362.42/x
  3. Step 3: Cross multiply
    545,853.66x = 818,928.72 × 309,362.42
  4. Step 4: Simplify right side
    545,853.66x = 253,345,766,532.06
  5. Step 5: Solve for x
    x = 253,345,766,532.06/545,853.66
  6. Step 6: Final answer
    x = 464,127.63

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1.5x scale

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.