Home / 1,345,871.21-1,856,833.27-862,702.78

Finding the Fourth Proportional to 1,345,871.21, 1,856,833.27 and 862,702.78

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Solution

The fourth proportional to 1,345,871.21, 1,856,833.27 and 862,702.78 is: 1,190,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,871.21 : 1,856,833.27 = 862,702.78 : x
  2. Step 2: Convert to fraction form
    1,345,871.21/1,856,833.27 = 862,702.78/x
  3. Step 3: Cross multiply
    1,345,871.21x = 1,856,833.27 × 862,702.78
  4. Step 4: Simplify right side
    1,345,871.21x = 1,601,895,210,427.81
  5. Step 5: Solve for x
    x = 1,601,895,210,427.81/1,345,871.21
  6. Step 6: Final answer
    x = 1,190,229.20

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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.