Home / 831,077.20-1,247,998.20-457,368.40

Finding the Fourth Proportional to 831,077.20, 1,247,998.20 and 457,368.40

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Solution

The fourth proportional to 831,077.20, 1,247,998.20 and 457,368.40 is: 686,813.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,077.20 : 1,247,998.20 = 457,368.40 : x
  2. Step 2: Convert to fraction form
    831,077.20/1,247,998.20 = 457,368.40/x
  3. Step 3: Cross multiply
    831,077.20x = 1,247,998.20 × 457,368.40
  4. Step 4: Simplify right side
    831,077.20x = 570,794,939,936.88
  5. Step 5: Solve for x
    x = 570,794,939,936.88/831,077.20
  6. Step 6: Final answer
    x = 686,813.38

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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.