Home / 688,983.81-1,033,408.90-209,215.77

Finding the Fourth Proportional to 688,983.81, 1,033,408.90 and 209,215.77

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Solution

The fourth proportional to 688,983.81, 1,033,408.90 and 209,215.77 is: 313,803.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,983.81 : 1,033,408.90 = 209,215.77 : x
  2. Step 2: Convert to fraction form
    688,983.81/1,033,408.90 = 209,215.77/x
  3. Step 3: Cross multiply
    688,983.81x = 1,033,408.90 × 209,215.77
  4. Step 4: Simplify right side
    688,983.81x = 216,205,434,916.57
  5. Step 5: Solve for x
    x = 216,205,434,916.57/688,983.81
  6. Step 6: Final answer
    x = 313,803.36

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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.