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Finding the Fourth Proportional to 685,877.38, 946,510.62 and 379,973.62

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Solution

The fourth proportional to 685,877.38, 946,510.62 and 379,973.62 is: 524,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,877.38 : 946,510.62 = 379,973.62 : x
  2. Step 2: Convert to fraction form
    685,877.38/946,510.62 = 379,973.62/x
  3. Step 3: Cross multiply
    685,877.38x = 946,510.62 × 379,973.62
  4. Step 4: Simplify right side
    685,877.38x = 359,649,066,408.08
  5. Step 5: Solve for x
    x = 359,649,066,408.08/685,877.38
  6. Step 6: Final answer
    x = 524,363.51

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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.