Home / 1,210,816.63-1,670,549.70-687,441.61

Finding the Fourth Proportional to 1,210,816.63, 1,670,549.70 and 687,441.61

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Solution

The fourth proportional to 1,210,816.63, 1,670,549.70 and 687,441.61 is: 948,455.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,816.63 : 1,670,549.70 = 687,441.61 : x
  2. Step 2: Convert to fraction form
    1,210,816.63/1,670,549.70 = 687,441.61/x
  3. Step 3: Cross multiply
    1,210,816.63x = 1,670,549.70 × 687,441.61
  4. Step 4: Simplify right side
    1,210,816.63x = 1,148,405,375,353.02
  5. Step 5: Solve for x
    x = 1,148,405,375,353.02/1,210,816.63
  6. Step 6: Final answer
    x = 948,455.24

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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.