Home / 513,848,130.88-709,108,624.56-278,898,778.48

Finding the Fourth Proportional to 513,848,130.88, 709,108,624.56 and 278,898,778.48

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Solution

The fourth proportional to 513,848,130.88, 709,108,624.56 and 278,898,778.48 is: 384,879,339.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,848,130.88 : 709,108,624.56 = 278,898,778.48 : x
  2. Step 2: Convert to fraction form
    513,848,130.88/709,108,624.56 = 278,898,778.48/x
  3. Step 3: Cross multiply
    513,848,130.88x = 709,108,624.56 × 278,898,778.48
  4. Step 4: Simplify right side
    513,848,130.88x = 197,769,529,199,416,928
  5. Step 5: Solve for x
    x = 197,769,529,199,416,928/513,848,130.88
  6. Step 6: Final answer
    x = 384,879,339.47

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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.