Home / 557,401.48-769,222.26-315,678.04

Finding the Fourth Proportional to 557,401.48, 769,222.26 and 315,678.04

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Solution

The fourth proportional to 557,401.48, 769,222.26 and 315,678.04 is: 435,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,401.48 : 769,222.26 = 315,678.04 : x
  2. Step 2: Convert to fraction form
    557,401.48/769,222.26 = 315,678.04/x
  3. Step 3: Cross multiply
    557,401.48x = 769,222.26 × 315,678.04
  4. Step 4: Simplify right side
    557,401.48x = 242,826,575,361.17
  5. Step 5: Solve for x
    x = 242,826,575,361.17/557,401.48
  6. Step 6: Final answer
    x = 435,640.35

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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.