Home / 839,603.81-1,259,602.55-278,638.31

Finding the Fourth Proportional to 839,603.81, 1,259,602.55 and 278,638.31

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Solution

The fourth proportional to 839,603.81, 1,259,602.55 and 278,638.31 is: 418,022.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,603.81 : 1,259,602.55 = 278,638.31 : x
  2. Step 2: Convert to fraction form
    839,603.81/1,259,602.55 = 278,638.31/x
  3. Step 3: Cross multiply
    839,603.81x = 1,259,602.55 × 278,638.31
  4. Step 4: Simplify right side
    839,603.81x = 350,973,528,604.40
  5. Step 5: Solve for x
    x = 350,973,528,604.40/839,603.81
  6. Step 6: Final answer
    x = 418,022.79

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1.5x scale

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.