Home / 1,440,328.85-1,987,630.30-786,940.81

Finding the Fourth Proportional to 1,440,328.85, 1,987,630.30 and 786,940.81

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Solution

The fourth proportional to 1,440,328.85, 1,987,630.30 and 786,940.81 is: 1,085,965.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,328.85 : 1,987,630.30 = 786,940.81 : x
  2. Step 2: Convert to fraction form
    1,440,328.85/1,987,630.30 = 786,940.81/x
  3. Step 3: Cross multiply
    1,440,328.85x = 1,987,630.30 × 786,940.81
  4. Step 4: Simplify right side
    1,440,328.85x = 1,564,147,391,326.12
  5. Step 5: Solve for x
    x = 1,564,147,391,326.12/1,440,328.85
  6. Step 6: Final answer
    x = 1,085,965.46

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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.