Home / 1,210,188.56-1,670,100-666,364.28

Finding the Fourth Proportional to 1,210,188.56, 1,670,100 and 666,364.28

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Solution

The fourth proportional to 1,210,188.56, 1,670,100 and 666,364.28 is: 919,604.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,188.56 : 1,670,100 = 666,364.28 : x
  2. Step 2: Convert to fraction form
    1,210,188.56/1,670,100 = 666,364.28/x
  3. Step 3: Cross multiply
    1,210,188.56x = 1,670,100 × 666,364.28
  4. Step 4: Simplify right side
    1,210,188.56x = 1,112,894,984,028
  5. Step 5: Solve for x
    x = 1,112,894,984,028/1,210,188.56
  6. Step 6: Final answer
    x = 919,604.61

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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.