Home / 1,986,920.48-2,980,672.32-638,638.63

Finding the Fourth Proportional to 1,986,920.48, 2,980,672.32 and 638,638.63

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Solution

The fourth proportional to 1,986,920.48, 2,980,672.32 and 638,638.63 is: 958,051.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,920.48 : 2,980,672.32 = 638,638.63 : x
  2. Step 2: Convert to fraction form
    1,986,920.48/2,980,672.32 = 638,638.63/x
  3. Step 3: Cross multiply
    1,986,920.48x = 2,980,672.32 × 638,638.63
  4. Step 4: Simplify right side
    1,986,920.48x = 1,903,572,481,866.94
  5. Step 5: Solve for x
    x = 1,903,572,481,866.94/1,986,920.48
  6. Step 6: Final answer
    x = 958,051.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.