Home / 612,990.37-917,714.07-388,604.17

Finding the Fourth Proportional to 612,990.37, 917,714.07 and 388,604.17

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Solution

The fourth proportional to 612,990.37, 917,714.07 and 388,604.17 is: 581,783.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,990.37 : 917,714.07 = 388,604.17 : x
  2. Step 2: Convert to fraction form
    612,990.37/917,714.07 = 388,604.17/x
  3. Step 3: Cross multiply
    612,990.37x = 917,714.07 × 388,604.17
  4. Step 4: Simplify right side
    612,990.37x = 356,627,514,469.67
  5. Step 5: Solve for x
    x = 356,627,514,469.67/612,990.37
  6. Step 6: Final answer
    x = 581,783.23

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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.