Home / 685,808,123.76-946,303,022.16-403,788,223.80

Finding the Fourth Proportional to 685,808,123.76, 946,303,022.16 and 403,788,223.80

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Solution

The fourth proportional to 685,808,123.76, 946,303,022.16 and 403,788,223.80 is: 557,161,694.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,808,123.76 : 946,303,022.16 = 403,788,223.80 : x
  2. Step 2: Convert to fraction form
    685,808,123.76/946,303,022.16 = 403,788,223.80/x
  3. Step 3: Cross multiply
    685,808,123.76x = 946,303,022.16 × 403,788,223.80
  4. Step 4: Simplify right side
    685,808,123.76x = 382,106,016,494,558,464
  5. Step 5: Solve for x
    x = 382,106,016,494,558,464/685,808,123.76
  6. Step 6: Final answer
    x = 557,161,694.73

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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.