Home / 678,808.40-1,018,212.60-627,486.80

Finding the Fourth Proportional to 678,808.40, 1,018,212.60 and 627,486.80

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Solution

The fourth proportional to 678,808.40, 1,018,212.60 and 627,486.80 is: 941,230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,808.40 : 1,018,212.60 = 627,486.80 : x
  2. Step 2: Convert to fraction form
    678,808.40/1,018,212.60 = 627,486.80/x
  3. Step 3: Cross multiply
    678,808.40x = 1,018,212.60 × 627,486.80
  4. Step 4: Simplify right side
    678,808.40x = 638,914,966,093.68
  5. Step 5: Solve for x
    x = 638,914,966,093.68/678,808.40
  6. Step 6: Final answer
    x = 941,230.20

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Similar ratio
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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.