Home / 1,190,287.75-1,642,596.69-646,423.68

Finding the Fourth Proportional to 1,190,287.75, 1,642,596.69 and 646,423.68

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Solution

The fourth proportional to 1,190,287.75, 1,642,596.69 and 646,423.68 is: 892,064.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,287.75 : 1,642,596.69 = 646,423.68 : x
  2. Step 2: Convert to fraction form
    1,190,287.75/1,642,596.69 = 646,423.68/x
  3. Step 3: Cross multiply
    1,190,287.75x = 1,642,596.69 × 646,423.68
  4. Step 4: Simplify right side
    1,190,287.75x = 1,061,813,385,660.52
  5. Step 5: Solve for x
    x = 1,061,813,385,660.52/1,190,287.75
  6. Step 6: Final answer
    x = 892,064.45

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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.