Home / 1,431,290.53-1,975,130.73-786,706.57

Finding the Fourth Proportional to 1,431,290.53, 1,975,130.73 and 786,706.57

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Solution

The fourth proportional to 1,431,290.53, 1,975,130.73 and 786,706.57 is: 1,085,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,290.53 : 1,975,130.73 = 786,706.57 : x
  2. Step 2: Convert to fraction form
    1,431,290.53/1,975,130.73 = 786,706.57/x
  3. Step 3: Cross multiply
    1,431,290.53x = 1,975,130.73 × 786,706.57
  4. Step 4: Simplify right side
    1,431,290.53x = 1,553,848,321,899.90
  5. Step 5: Solve for x
    x = 1,553,848,321,899.90/1,431,290.53
  6. Step 6: Final answer
    x = 1,085,627.47

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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.