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Finding the Fourth Proportional to 685,705.10, 946,200.99 and 379,773.46

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Solution

The fourth proportional to 685,705.10, 946,200.99 and 379,773.46 is: 524,047.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,705.10 : 946,200.99 = 379,773.46 : x
  2. Step 2: Convert to fraction form
    685,705.10/946,200.99 = 379,773.46/x
  3. Step 3: Cross multiply
    685,705.10x = 946,200.99 × 379,773.46
  4. Step 4: Simplify right side
    685,705.10x = 359,342,026,434.63
  5. Step 5: Solve for x
    x = 359,342,026,434.63/685,705.10
  6. Step 6: Final answer
    x = 524,047.48

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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.