Home / 710,170,147.35-979,992,515.25-392,611,366.80

Finding the Fourth Proportional to 710,170,147.35, 979,992,515.25 and 392,611,366.80

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Solution

The fourth proportional to 710,170,147.35, 979,992,515.25 and 392,611,366.80 is: 541,780,307.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,170,147.35 : 979,992,515.25 = 392,611,366.80 : x
  2. Step 2: Convert to fraction form
    710,170,147.35/979,992,515.25 = 392,611,366.80/x
  3. Step 3: Cross multiply
    710,170,147.35x = 979,992,515.25 × 392,611,366.80
  4. Step 4: Simplify right side
    710,170,147.35x = 384,756,200,866,072,384
  5. Step 5: Solve for x
    x = 384,756,200,866,072,384/710,170,147.35
  6. Step 6: Final answer
    x = 541,780,307.58

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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.