Home / 789,969.21-1,090,156.95-445,877.58

Finding the Fourth Proportional to 789,969.21, 1,090,156.95 and 445,877.58

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Solution

The fourth proportional to 789,969.21, 1,090,156.95 and 445,877.58 is: 615,310.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,969.21 : 1,090,156.95 = 445,877.58 : x
  2. Step 2: Convert to fraction form
    789,969.21/1,090,156.95 = 445,877.58/x
  3. Step 3: Cross multiply
    789,969.21x = 1,090,156.95 × 445,877.58
  4. Step 4: Simplify right side
    789,969.21x = 486,076,542,686.18
  5. Step 5: Solve for x
    x = 486,076,542,686.18/789,969.21
  6. Step 6: Final answer
    x = 615,310.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.