Home / 678,733.60-1,018,100.40-647,629.60

Finding the Fourth Proportional to 678,733.60, 1,018,100.40 and 647,629.60

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Solution

The fourth proportional to 678,733.60, 1,018,100.40 and 647,629.60 is: 971,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,733.60 : 1,018,100.40 = 647,629.60 : x
  2. Step 2: Convert to fraction form
    678,733.60/1,018,100.40 = 647,629.60/x
  3. Step 3: Cross multiply
    678,733.60x = 1,018,100.40 × 647,629.60
  4. Step 4: Simplify right side
    678,733.60x = 659,351,954,811.84
  5. Step 5: Solve for x
    x = 659,351,954,811.84/678,733.60
  6. Step 6: Final answer
    x = 971,444.40

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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.