Home / 1,405,156.64-1,939,479.48-916,344.56

Finding the Fourth Proportional to 1,405,156.64, 1,939,479.48 and 916,344.56

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Solution

The fourth proportional to 1,405,156.64, 1,939,479.48 and 916,344.56 is: 1,264,792.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,156.64 : 1,939,479.48 = 916,344.56 : x
  2. Step 2: Convert to fraction form
    1,405,156.64/1,939,479.48 = 916,344.56/x
  3. Step 3: Cross multiply
    1,405,156.64x = 1,939,479.48 × 916,344.56
  4. Step 4: Simplify right side
    1,405,156.64x = 1,777,231,470,729.63
  5. Step 5: Solve for x
    x = 1,777,231,470,729.63/1,405,156.64
  6. Step 6: Final answer
    x = 1,264,792.42

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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.