Home / 1,289,603.89-1,779,696.53-716,668.21

Finding the Fourth Proportional to 1,289,603.89, 1,779,696.53 and 716,668.21

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Solution

The fourth proportional to 1,289,603.89, 1,779,696.53 and 716,668.21 is: 989,026.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,603.89 : 1,779,696.53 = 716,668.21 : x
  2. Step 2: Convert to fraction form
    1,289,603.89/1,779,696.53 = 716,668.21/x
  3. Step 3: Cross multiply
    1,289,603.89x = 1,779,696.53 × 716,668.21
  4. Step 4: Simplify right side
    1,289,603.89x = 1,275,451,926,498.31
  5. Step 5: Solve for x
    x = 1,275,451,926,498.31/1,289,603.89
  6. Step 6: Final answer
    x = 989,026.12

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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.