Home / 1,511,490.30-2,085,702.40-930,621.28

Finding the Fourth Proportional to 1,511,490.30, 2,085,702.40 and 930,621.28

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Solution

The fourth proportional to 1,511,490.30, 2,085,702.40 and 930,621.28 is: 1,284,162.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511,490.30 : 2,085,702.40 = 930,621.28 : x
  2. Step 2: Convert to fraction form
    1,511,490.30/2,085,702.40 = 930,621.28/x
  3. Step 3: Cross multiply
    1,511,490.30x = 2,085,702.40 × 930,621.28
  4. Step 4: Simplify right side
    1,511,490.30x = 1,940,999,037,187.07
  5. Step 5: Solve for x
    x = 1,940,999,037,187.07/1,511,490.30
  6. Step 6: Final answer
    x = 1,284,162.42

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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.