Home / 688,947.05-1,033,460.80-209,190.51

Finding the Fourth Proportional to 688,947.05, 1,033,460.80 and 209,190.51

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Solution

The fourth proportional to 688,947.05, 1,033,460.80 and 209,190.51 is: 313,797.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,947.05 : 1,033,460.80 = 209,190.51 : x
  2. Step 2: Convert to fraction form
    688,947.05/1,033,460.80 = 209,190.51/x
  3. Step 3: Cross multiply
    688,947.05x = 1,033,460.80 × 209,190.51
  4. Step 4: Simplify right side
    688,947.05x = 216,190,191,311.59
  5. Step 5: Solve for x
    x = 216,190,191,311.59/688,947.05
  6. Step 6: Final answer
    x = 313,797.98

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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.