Home / 557,259.72-769,021.36-315,589.34

Finding the Fourth Proportional to 557,259.72, 769,021.36 and 315,589.34

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Solution

The fourth proportional to 557,259.72, 769,021.36 and 315,589.34 is: 435,514.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,259.72 : 769,021.36 = 315,589.34 : x
  2. Step 2: Convert to fraction form
    557,259.72/769,021.36 = 315,589.34/x
  3. Step 3: Cross multiply
    557,259.72x = 769,021.36 × 315,589.34
  4. Step 4: Simplify right side
    557,259.72x = 242,694,939,603.20
  5. Step 5: Solve for x
    x = 242,694,939,603.20/557,259.72
  6. Step 6: Final answer
    x = 435,514.95

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1.5x scale

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.