Home / 685,749,662.07-946,413,039.09-384,416,360.72

Finding the Fourth Proportional to 685,749,662.07, 946,413,039.09 and 384,416,360.72

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Solution

The fourth proportional to 685,749,662.07, 946,413,039.09 and 384,416,360.72 is: 530,538,586.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,749,662.07 : 946,413,039.09 = 384,416,360.72 : x
  2. Step 2: Convert to fraction form
    685,749,662.07/946,413,039.09 = 384,416,360.72/x
  3. Step 3: Cross multiply
    685,749,662.07x = 946,413,039.09 × 384,416,360.72
  4. Step 4: Simplify right side
    685,749,662.07x = 363,816,656,224,932,928
  5. Step 5: Solve for x
    x = 363,816,656,224,932,928/685,749,662.07
  6. Step 6: Final answer
    x = 530,538,586.24

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1.5x scale

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.