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Finding the Fourth Proportional to 559,745.12, 772,448.48 and 318,028.01

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Solution

The fourth proportional to 559,745.12, 772,448.48 and 318,028.01 is: 438,878.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,745.12 : 772,448.48 = 318,028.01 : x
  2. Step 2: Convert to fraction form
    559,745.12/772,448.48 = 318,028.01/x
  3. Step 3: Cross multiply
    559,745.12x = 772,448.48 × 318,028.01
  4. Step 4: Simplify right side
    559,745.12x = 245,660,249,059.68
  5. Step 5: Solve for x
    x = 245,660,249,059.68/559,745.12
  6. Step 6: Final answer
    x = 438,878.77

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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.