Home / 816,739.68-1,127,101.68-454,155.78

Finding the Fourth Proportional to 816,739.68, 1,127,101.68 and 454,155.78

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Solution

The fourth proportional to 816,739.68, 1,127,101.68 and 454,155.78 is: 626,735.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,739.68 : 1,127,101.68 = 454,155.78 : x
  2. Step 2: Convert to fraction form
    816,739.68/1,127,101.68 = 454,155.78/x
  3. Step 3: Cross multiply
    816,739.68x = 1,127,101.68 × 454,155.78
  4. Step 4: Simplify right side
    816,739.68x = 511,879,742,619.71
  5. Step 5: Solve for x
    x = 511,879,742,619.71/816,739.68
  6. Step 6: Final answer
    x = 626,735.49

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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.