Home / 685,691,816.67-946,249,506.15-372,428,272.67

Finding the Fourth Proportional to 685,691,816.67, 946,249,506.15 and 372,428,272.67

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Solution

The fourth proportional to 685,691,816.67, 946,249,506.15 and 372,428,272.67 is: 513,948,191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,691,816.67 : 946,249,506.15 = 372,428,272.67 : x
  2. Step 2: Convert to fraction form
    685,691,816.67/946,249,506.15 = 372,428,272.67/x
  3. Step 3: Cross multiply
    685,691,816.67x = 946,249,506.15 × 372,428,272.67
  4. Step 4: Simplify right side
    685,691,816.67x = 352,410,069,085,553,792
  5. Step 5: Solve for x
    x = 352,410,069,085,553,792/685,691,816.67
  6. Step 6: Final answer
    x = 513,948,191.47

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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.