Home / 989,870.20-1,484,805.30-691,271.80

Finding the Fourth Proportional to 989,870.20, 1,484,805.30 and 691,271.80

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Solution

The fourth proportional to 989,870.20, 1,484,805.30 and 691,271.80 is: 1,036,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,870.20 : 1,484,805.30 = 691,271.80 : x
  2. Step 2: Convert to fraction form
    989,870.20/1,484,805.30 = 691,271.80/x
  3. Step 3: Cross multiply
    989,870.20x = 1,484,805.30 × 691,271.80
  4. Step 4: Simplify right side
    989,870.20x = 1,026,404,032,380.54
  5. Step 5: Solve for x
    x = 1,026,404,032,380.54/989,870.20
  6. Step 6: Final answer
    x = 1,036,907.70

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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.