Home / 644,787.16-889,765.44-358,290.16

Finding the Fourth Proportional to 644,787.16, 889,765.44 and 358,290.16

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Solution

The fourth proportional to 644,787.16, 889,765.44 and 358,290.16 is: 494,417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,787.16 : 889,765.44 = 358,290.16 : x
  2. Step 2: Convert to fraction form
    644,787.16/889,765.44 = 358,290.16/x
  3. Step 3: Cross multiply
    644,787.16x = 889,765.44 × 358,290.16
  4. Step 4: Simplify right side
    644,787.16x = 318,794,201,860.07
  5. Step 5: Solve for x
    x = 318,794,201,860.07/644,787.16
  6. Step 6: Final answer
    x = 494,417.73

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1.5x scale

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.