Home / 1,186,618.21-1,779,836.49-428,460.03

Finding the Fourth Proportional to 1,186,618.21, 1,779,836.49 and 428,460.03

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Solution

The fourth proportional to 1,186,618.21, 1,779,836.49 and 428,460.03 is: 642,657.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,618.21 : 1,779,836.49 = 428,460.03 : x
  2. Step 2: Convert to fraction form
    1,186,618.21/1,779,836.49 = 428,460.03/x
  3. Step 3: Cross multiply
    1,186,618.21x = 1,779,836.49 × 428,460.03
  4. Step 4: Simplify right side
    1,186,618.21x = 762,588,795,900.50
  5. Step 5: Solve for x
    x = 762,588,795,900.50/1,186,618.21
  6. Step 6: Final answer
    x = 642,657.25

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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.