Home / 785,428.36-1,083,862.72-480,015.64

Finding the Fourth Proportional to 785,428.36, 1,083,862.72 and 480,015.64

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Solution

The fourth proportional to 785,428.36, 1,083,862.72 and 480,015.64 is: 662,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,428.36 : 1,083,862.72 = 480,015.64 : x
  2. Step 2: Convert to fraction form
    785,428.36/1,083,862.72 = 480,015.64/x
  3. Step 3: Cross multiply
    785,428.36x = 1,083,862.72 × 480,015.64
  4. Step 4: Simplify right side
    785,428.36x = 520,271,057,212.94
  5. Step 5: Solve for x
    x = 520,271,057,212.94/785,428.36
  6. Step 6: Final answer
    x = 662,404.22

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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.