Home / 685,516.72-946,001.48-379,586.53

Finding the Fourth Proportional to 685,516.72, 946,001.48 and 379,586.53

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Solution

The fourth proportional to 685,516.72, 946,001.48 and 379,586.53 is: 523,822.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,516.72 : 946,001.48 = 379,586.53 : x
  2. Step 2: Convert to fraction form
    685,516.72/946,001.48 = 379,586.53/x
  3. Step 3: Cross multiply
    685,516.72x = 946,001.48 × 379,586.53
  4. Step 4: Simplify right side
    685,516.72x = 359,089,417,927.18
  5. Step 5: Solve for x
    x = 359,089,417,927.18/685,516.72
  6. Step 6: Final answer
    x = 523,822.99

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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.