Home / 831,386.40-1,247,446.80-404,685.60

Finding the Fourth Proportional to 831,386.40, 1,247,446.80 and 404,685.60

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Solution

The fourth proportional to 831,386.40, 1,247,446.80 and 404,685.60 is: 607,207.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,386.40 : 1,247,446.80 = 404,685.60 : x
  2. Step 2: Convert to fraction form
    831,386.40/1,247,446.80 = 404,685.60/x
  3. Step 3: Cross multiply
    831,386.40x = 1,247,446.80 × 404,685.60
  4. Step 4: Simplify right side
    831,386.40x = 504,823,756,726.08
  5. Step 5: Solve for x
    x = 504,823,756,726.08/831,386.40
  6. Step 6: Final answer
    x = 607,207.14

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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.