Home / 685,092,412.08-945,428,441.40-371,826,626.16

Finding the Fourth Proportional to 685,092,412.08, 945,428,441.40 and 371,826,626.16

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Solution

The fourth proportional to 685,092,412.08, 945,428,441.40 and 371,826,626.16 is: 513,121,239.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,092,412.08 : 945,428,441.40 = 371,826,626.16 : x
  2. Step 2: Convert to fraction form
    685,092,412.08/945,428,441.40 = 371,826,626.16/x
  3. Step 3: Cross multiply
    685,092,412.08x = 945,428,441.40 × 371,826,626.16
  4. Step 4: Simplify right side
    685,092,412.08x = 351,535,467,641,469,312
  5. Step 5: Solve for x
    x = 351,535,467,641,469,312/685,092,412.08
  6. Step 6: Final answer
    x = 513,121,239.48

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Double scale
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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.