Home / 688,712.40-1,033,214.40-208,900.80

Finding the Fourth Proportional to 688,712.40, 1,033,214.40 and 208,900.80

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Solution

The fourth proportional to 688,712.40, 1,033,214.40 and 208,900.80 is: 313,395.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,712.40 : 1,033,214.40 = 208,900.80 : x
  2. Step 2: Convert to fraction form
    688,712.40/1,033,214.40 = 208,900.80/x
  3. Step 3: Cross multiply
    688,712.40x = 1,033,214.40 × 208,900.80
  4. Step 4: Simplify right side
    688,712.40x = 215,839,314,731.52
  5. Step 5: Solve for x
    x = 215,839,314,731.52/688,712.40
  6. Step 6: Final answer
    x = 313,395.42

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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.