Home / 831,360.36-1,147,276.80-449,387.16

Finding the Fourth Proportional to 831,360.36, 1,147,276.80 and 449,387.16

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Solution

The fourth proportional to 831,360.36, 1,147,276.80 and 449,387.16 is: 620,154.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,360.36 : 1,147,276.80 = 449,387.16 : x
  2. Step 2: Convert to fraction form
    831,360.36/1,147,276.80 = 449,387.16/x
  3. Step 3: Cross multiply
    831,360.36x = 1,147,276.80 × 449,387.16
  4. Step 4: Simplify right side
    831,360.36x = 515,571,462,885.89
  5. Step 5: Solve for x
    x = 515,571,462,885.89/831,360.36
  6. Step 6: Final answer
    x = 620,154.01

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Double scale
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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.