Home / 1,398,941.28-1,930,688.46-855,395.64

Finding the Fourth Proportional to 1,398,941.28, 1,930,688.46 and 855,395.64

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Solution

The fourth proportional to 1,398,941.28, 1,930,688.46 and 855,395.64 is: 1,180,537.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,941.28 : 1,930,688.46 = 855,395.64 : x
  2. Step 2: Convert to fraction form
    1,398,941.28/1,930,688.46 = 855,395.64/x
  3. Step 3: Cross multiply
    1,398,941.28x = 1,930,688.46 × 855,395.64
  4. Step 4: Simplify right side
    1,398,941.28x = 1,651,502,490,882.31
  5. Step 5: Solve for x
    x = 1,651,502,490,882.31/1,398,941.28
  6. Step 6: Final answer
    x = 1,180,537.39

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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.