Home / 989,621.29-1,484,491.92-279,702.46

Finding the Fourth Proportional to 989,621.29, 1,484,491.92 and 279,702.46

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Solution

The fourth proportional to 989,621.29, 1,484,491.92 and 279,702.46 is: 419,570.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,621.29 : 1,484,491.92 = 279,702.46 : x
  2. Step 2: Convert to fraction form
    989,621.29/1,484,491.92 = 279,702.46/x
  3. Step 3: Cross multiply
    989,621.29x = 1,484,491.92 × 279,702.46
  4. Step 4: Simplify right side
    989,621.29x = 415,216,041,874.12
  5. Step 5: Solve for x
    x = 415,216,041,874.12/989,621.29
  6. Step 6: Final answer
    x = 419,570.64

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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.