Home / 685,803,205.50-946,434,438.20-384,394,088.13

Finding the Fourth Proportional to 685,803,205.50, 946,434,438.20 and 384,394,088.13

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Solution

The fourth proportional to 685,803,205.50, 946,434,438.20 and 384,394,088.13 is: 530,478,422.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,803,205.50 : 946,434,438.20 = 384,394,088.13 : x
  2. Step 2: Convert to fraction form
    685,803,205.50/946,434,438.20 = 384,394,088.13/x
  3. Step 3: Cross multiply
    685,803,205.50x = 946,434,438.20 × 384,394,088.13
  4. Step 4: Simplify right side
    685,803,205.50x = 363,803,802,844,795,904
  5. Step 5: Solve for x
    x = 363,803,802,844,795,904/685,803,205.50
  6. Step 6: Final answer
    x = 530,478,422.86

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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.