Home / 685,749,657.54-946,413,032.82-384,416,356.20

Finding the Fourth Proportional to 685,749,657.54, 946,413,032.82 and 384,416,356.20

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Solution

The fourth proportional to 685,749,657.54, 946,413,032.82 and 384,416,356.20 is: 530,538,579.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,749,657.54 : 946,413,032.82 = 384,416,356.20 : x
  2. Step 2: Convert to fraction form
    685,749,657.54/946,413,032.82 = 384,416,356.20/x
  3. Step 3: Cross multiply
    685,749,657.54x = 946,413,032.82 × 384,416,356.20
  4. Step 4: Simplify right side
    685,749,657.54x = 363,816,649,536,855,424
  5. Step 5: Solve for x
    x = 363,816,649,536,855,424/685,749,657.54
  6. Step 6: Final answer
    x = 530,538,579.99

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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.