Home / 557,416.98-769,245.57-315,749.70

Finding the Fourth Proportional to 557,416.98, 769,245.57 and 315,749.70

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Solution

The fourth proportional to 557,416.98, 769,245.57 and 315,749.70 is: 435,740.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,416.98 : 769,245.57 = 315,749.70 : x
  2. Step 2: Convert to fraction form
    557,416.98/769,245.57 = 315,749.70/x
  3. Step 3: Cross multiply
    557,416.98x = 769,245.57 × 315,749.70
  4. Step 4: Simplify right side
    557,416.98x = 242,889,057,953.83
  5. Step 5: Solve for x
    x = 242,889,057,953.83/557,416.98
  6. Step 6: Final answer
    x = 435,740.33

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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.