Home / 905,388.32-1,357,976.37-306,347.69

Finding the Fourth Proportional to 905,388.32, 1,357,976.37 and 306,347.69

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Solution

The fourth proportional to 905,388.32, 1,357,976.37 and 306,347.69 is: 459,485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,388.32 : 1,357,976.37 = 306,347.69 : x
  2. Step 2: Convert to fraction form
    905,388.32/1,357,976.37 = 306,347.69/x
  3. Step 3: Cross multiply
    905,388.32x = 1,357,976.37 × 306,347.69
  4. Step 4: Simplify right side
    905,388.32x = 416,012,924,024.09
  5. Step 5: Solve for x
    x = 416,012,924,024.09/905,388.32
  6. Step 6: Final answer
    x = 459,485.63

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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.