Home / 685,909.70-946,545.16-379,985.46

Finding the Fourth Proportional to 685,909.70, 946,545.16 and 379,985.46

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Solution

The fourth proportional to 685,909.70, 946,545.16 and 379,985.46 is: 524,374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,909.70 : 946,545.16 = 379,985.46 : x
  2. Step 2: Convert to fraction form
    685,909.70/946,545.16 = 379,985.46/x
  3. Step 3: Cross multiply
    685,909.70x = 946,545.16 × 379,985.46
  4. Step 4: Simplify right side
    685,909.70x = 359,673,398,033.37
  5. Step 5: Solve for x
    x = 359,673,398,033.37/685,909.70
  6. Step 6: Final answer
    x = 524,374.27

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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.