Home / 485,848.57-670,290.27-281,785.06

Finding the Fourth Proportional to 485,848.57, 670,290.27 and 281,785.06

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Solution

The fourth proportional to 485,848.57, 670,290.27 and 281,785.06 is: 388,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,848.57 : 670,290.27 = 281,785.06 : x
  2. Step 2: Convert to fraction form
    485,848.57/670,290.27 = 281,785.06/x
  3. Step 3: Cross multiply
    485,848.57x = 670,290.27 × 281,785.06
  4. Step 4: Simplify right side
    485,848.57x = 188,877,783,949.37
  5. Step 5: Solve for x
    x = 188,877,783,949.37/485,848.57
  6. Step 6: Final answer
    x = 388,758.55

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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.