Home / 513,039,658.70-707,975,761.24-278,085,274.48

Finding the Fourth Proportional to 513,039,658.70, 707,975,761.24 and 278,085,274.48

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Solution

The fourth proportional to 513,039,658.70, 707,975,761.24 and 278,085,274.48 is: 383,747,397.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,039,658.70 : 707,975,761.24 = 278,085,274.48 : x
  2. Step 2: Convert to fraction form
    513,039,658.70/707,975,761.24 = 278,085,274.48/x
  3. Step 3: Cross multiply
    513,039,658.70x = 707,975,761.24 × 278,085,274.48
  4. Step 4: Simplify right side
    513,039,658.70x = 196,877,633,889,612,352
  5. Step 5: Solve for x
    x = 196,877,633,889,612,352/513,039,658.70
  6. Step 6: Final answer
    x = 383,747,397.60

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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.