Home / 1,393,186.40-2,086,280.40-917,295.20

Finding the Fourth Proportional to 1,393,186.40, 2,086,280.40 and 917,295.20

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Solution

The fourth proportional to 1,393,186.40, 2,086,280.40 and 917,295.20 is: 1,373,638.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,186.40 : 2,086,280.40 = 917,295.20 : x
  2. Step 2: Convert to fraction form
    1,393,186.40/2,086,280.40 = 917,295.20/x
  3. Step 3: Cross multiply
    1,393,186.40x = 2,086,280.40 × 917,295.20
  4. Step 4: Simplify right side
    1,393,186.40x = 1,913,734,996,774.08
  5. Step 5: Solve for x
    x = 1,913,734,996,774.08/1,393,186.40
  6. Step 6: Final answer
    x = 1,373,638.87

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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.