Home / 685,559,634.12-946,361,933.78-462,843,007.70

Finding the Fourth Proportional to 685,559,634.12, 946,361,933.78 and 462,843,007.70

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Solution

The fourth proportional to 685,559,634.12, 946,361,933.78 and 462,843,007.70 is: 638,918,894.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,559,634.12 : 946,361,933.78 = 462,843,007.70 : x
  2. Step 2: Convert to fraction form
    685,559,634.12/946,361,933.78 = 462,843,007.70/x
  3. Step 3: Cross multiply
    685,559,634.12x = 946,361,933.78 × 462,843,007.70
  4. Step 4: Simplify right side
    685,559,634.12x = 438,017,003,796,477,376
  5. Step 5: Solve for x
    x = 438,017,003,796,477,376/685,559,634.12
  6. Step 6: Final answer
    x = 638,918,894.87

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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.