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Finding the Fourth Proportional to 496,598.40, 685,306.76 and 281,696.94

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Solution

The fourth proportional to 496,598.40, 685,306.76 and 281,696.94 is: 388,742.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,598.40 : 685,306.76 = 281,696.94 : x
  2. Step 2: Convert to fraction form
    496,598.40/685,306.76 = 281,696.94/x
  3. Step 3: Cross multiply
    496,598.40x = 685,306.76 × 281,696.94
  4. Step 4: Simplify right side
    496,598.40x = 193,048,815,844.83
  5. Step 5: Solve for x
    x = 193,048,815,844.83/496,598.40
  6. Step 6: Final answer
    x = 388,742.32

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1.5x scale

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.