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Finding the Fourth Proportional to 685,222.67, 945,595.82 and 379,292.49

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Solution

The fourth proportional to 685,222.67, 945,595.82 and 379,292.49 is: 523,417.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,222.67 : 945,595.82 = 379,292.49 : x
  2. Step 2: Convert to fraction form
    685,222.67/945,595.82 = 379,292.49/x
  3. Step 3: Cross multiply
    685,222.67x = 945,595.82 × 379,292.49
  4. Step 4: Simplify right side
    685,222.67x = 358,657,391,204.93
  5. Step 5: Solve for x
    x = 358,657,391,204.93/685,222.67
  6. Step 6: Final answer
    x = 523,417.29

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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.