Home / 678,542.40-1,017,813.60-620,481.60

Finding the Fourth Proportional to 678,542.40, 1,017,813.60 and 620,481.60

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Solution

The fourth proportional to 678,542.40, 1,017,813.60 and 620,481.60 is: 930,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,542.40 : 1,017,813.60 = 620,481.60 : x
  2. Step 2: Convert to fraction form
    678,542.40/1,017,813.60 = 620,481.60/x
  3. Step 3: Cross multiply
    678,542.40x = 1,017,813.60 × 620,481.60
  4. Step 4: Simplify right side
    678,542.40x = 631,534,611,029.76
  5. Step 5: Solve for x
    x = 631,534,611,029.76/678,542.40
  6. Step 6: Final answer
    x = 930,722.40

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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.