Home / 688,983.75-1,033,408.81-209,215.71

Finding the Fourth Proportional to 688,983.75, 1,033,408.81 and 209,215.71

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Solution

The fourth proportional to 688,983.75, 1,033,408.81 and 209,215.71 is: 313,803.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,983.75 : 1,033,408.81 = 209,215.71 : x
  2. Step 2: Convert to fraction form
    688,983.75/1,033,408.81 = 209,215.71/x
  3. Step 3: Cross multiply
    688,983.75x = 1,033,408.81 × 209,215.71
  4. Step 4: Simplify right side
    688,983.75x = 216,205,356,915.53
  5. Step 5: Solve for x
    x = 216,205,356,915.53/688,983.75
  6. Step 6: Final answer
    x = 313,803.27

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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.