Home / 710,170,125.36-979,992,484.92-392,611,344.78

Finding the Fourth Proportional to 710,170,125.36, 979,992,484.92 and 392,611,344.78

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Solution

The fourth proportional to 710,170,125.36, 979,992,484.92 and 392,611,344.78 is: 541,780,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,170,125.36 : 979,992,484.92 = 392,611,344.78 : x
  2. Step 2: Convert to fraction form
    710,170,125.36/979,992,484.92 = 392,611,344.78/x
  3. Step 3: Cross multiply
    710,170,125.36x = 979,992,484.92 × 392,611,344.78
  4. Step 4: Simplify right side
    710,170,125.36x = 384,756,167,378,735,040
  5. Step 5: Solve for x
    x = 384,756,167,378,735,040/710,170,125.36
  6. Step 6: Final answer
    x = 541,780,277.20

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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.