Home / 685,314,587.45-945,729,052.46-372,040,746.77

Finding the Fourth Proportional to 685,314,587.45, 945,729,052.46 and 372,040,746.77

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Solution

The fourth proportional to 685,314,587.45, 945,729,052.46 and 372,040,746.77 is: 513,413,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,314,587.45 : 945,729,052.46 = 372,040,746.77 : x
  2. Step 2: Convert to fraction form
    685,314,587.45/945,729,052.46 = 372,040,746.77/x
  3. Step 3: Cross multiply
    685,314,587.45x = 945,729,052.46 × 372,040,746.77
  4. Step 4: Simplify right side
    685,314,587.45x = 351,849,742,919,807,040
  5. Step 5: Solve for x
    x = 351,849,742,919,807,040/685,314,587.45
  6. Step 6: Final answer
    x = 513,413,473.70

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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.