Home / 688,983.79-1,033,408.86-209,215.74

Finding the Fourth Proportional to 688,983.79, 1,033,408.86 and 209,215.74

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Solution

The fourth proportional to 688,983.79, 1,033,408.86 and 209,215.74 is: 313,803.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,983.79 : 1,033,408.86 = 209,215.74 : x
  2. Step 2: Convert to fraction form
    688,983.79/1,033,408.86 = 209,215.74/x
  3. Step 3: Cross multiply
    688,983.79x = 1,033,408.86 × 209,215.74
  4. Step 4: Simplify right side
    688,983.79x = 216,205,402,319.98
  5. Step 5: Solve for x
    x = 216,205,402,319.98/688,983.79
  6. Step 6: Final answer
    x = 313,803.32

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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.