Home / 688,988.49-1,033,415.91-209,220.45

Finding the Fourth Proportional to 688,988.49, 1,033,415.91 and 209,220.45

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Solution

The fourth proportional to 688,988.49, 1,033,415.91 and 209,220.45 is: 313,810.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,988.49 : 1,033,415.91 = 209,220.45 : x
  2. Step 2: Convert to fraction form
    688,988.49/1,033,415.91 = 209,220.45/x
  3. Step 3: Cross multiply
    688,988.49x = 1,033,415.91 × 209,220.45
  4. Step 4: Simplify right side
    688,988.49x = 216,211,741,727.36
  5. Step 5: Solve for x
    x = 216,211,741,727.36/688,988.49
  6. Step 6: Final answer
    x = 313,810.38

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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.