Home / 1,398,416.40-2,097,165.33-438,870.15

Finding the Fourth Proportional to 1,398,416.40, 2,097,165.33 and 438,870.15

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Solution

The fourth proportional to 1,398,416.40, 2,097,165.33 and 438,870.15 is: 658,161.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,416.40 : 2,097,165.33 = 438,870.15 : x
  2. Step 2: Convert to fraction form
    1,398,416.40/2,097,165.33 = 438,870.15/x
  3. Step 3: Cross multiply
    1,398,416.40x = 2,097,165.33 × 438,870.15
  4. Step 4: Simplify right side
    1,398,416.40x = 920,383,262,951.90
  5. Step 5: Solve for x
    x = 920,383,262,951.90/1,398,416.40
  6. Step 6: Final answer
    x = 658,161.09

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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.