Home / 831,325.01-1,147,241.27-487,078.55

Finding the Fourth Proportional to 831,325.01, 1,147,241.27 and 487,078.55

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Solution

The fourth proportional to 831,325.01, 1,147,241.27 and 487,078.55 is: 672,175.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,325.01 : 1,147,241.27 = 487,078.55 : x
  2. Step 2: Convert to fraction form
    831,325.01/1,147,241.27 = 487,078.55/x
  3. Step 3: Cross multiply
    831,325.01x = 1,147,241.27 × 487,078.55
  4. Step 4: Simplify right side
    831,325.01x = 558,796,614,075.40
  5. Step 5: Solve for x
    x = 558,796,614,075.40/831,325.01
  6. Step 6: Final answer
    x = 672,175.88

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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.