Home / 1,290,365.76-1,780,603.44-717,371.04

Finding the Fourth Proportional to 1,290,365.76, 1,780,603.44 and 717,371.04

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Solution

The fourth proportional to 1,290,365.76, 1,780,603.44 and 717,371.04 is: 989,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,365.76 : 1,780,603.44 = 717,371.04 : x
  2. Step 2: Convert to fraction form
    1,290,365.76/1,780,603.44 = 717,371.04/x
  3. Step 3: Cross multiply
    1,290,365.76x = 1,780,603.44 × 717,371.04
  4. Step 4: Simplify right side
    1,290,365.76x = 1,277,353,341,580.38
  5. Step 5: Solve for x
    x = 1,277,353,341,580.38/1,290,365.76
  6. Step 6: Final answer
    x = 989,915.71

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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.