Home / 866,920.06-1,196,412.78-485,069.86

Finding the Fourth Proportional to 866,920.06, 1,196,412.78 and 485,069.86

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Solution

The fourth proportional to 866,920.06, 1,196,412.78 and 485,069.86 is: 669,431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,920.06 : 1,196,412.78 = 485,069.86 : x
  2. Step 2: Convert to fraction form
    866,920.06/1,196,412.78 = 485,069.86/x
  3. Step 3: Cross multiply
    866,920.06x = 1,196,412.78 × 485,069.86
  4. Step 4: Simplify right side
    866,920.06x = 580,343,779,696.81
  5. Step 5: Solve for x
    x = 580,343,779,696.81/866,920.06
  6. Step 6: Final answer
    x = 669,431.71

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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.