Home / 687,976.16-1,031,927.78-214,607.30

Finding the Fourth Proportional to 687,976.16, 1,031,927.78 and 214,607.30

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Solution

The fourth proportional to 687,976.16, 1,031,927.78 and 214,607.30 is: 321,899.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,976.16 : 1,031,927.78 = 214,607.30 : x
  2. Step 2: Convert to fraction form
    687,976.16/1,031,927.78 = 214,607.30/x
  3. Step 3: Cross multiply
    687,976.16x = 1,031,927.78 × 214,607.30
  4. Step 4: Simplify right side
    687,976.16x = 221,459,234,660.79
  5. Step 5: Solve for x
    x = 221,459,234,660.79/687,976.16
  6. Step 6: Final answer
    x = 321,899.58

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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.