Home / 685,837.48-946,463.34-379,918.57

Finding the Fourth Proportional to 685,837.48, 946,463.34 and 379,918.57

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Solution

The fourth proportional to 685,837.48, 946,463.34 and 379,918.57 is: 524,291.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,837.48 : 946,463.34 = 379,918.57 : x
  2. Step 2: Convert to fraction form
    685,837.48/946,463.34 = 379,918.57/x
  3. Step 3: Cross multiply
    685,837.48x = 946,463.34 × 379,918.57
  4. Step 4: Simplify right side
    685,837.48x = 359,578,998,690.22
  5. Step 5: Solve for x
    x = 359,578,998,690.22/685,837.48
  6. Step 6: Final answer
    x = 524,291.85

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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.