Home / 371,923.29-513,501.30-285,728.76

Finding the Fourth Proportional to 371,923.29, 513,501.30 and 285,728.76

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Solution

The fourth proportional to 371,923.29, 513,501.30 and 285,728.76 is: 394,495.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,923.29 : 513,501.30 = 285,728.76 : x
  2. Step 2: Convert to fraction form
    371,923.29/513,501.30 = 285,728.76/x
  3. Step 3: Cross multiply
    371,923.29x = 513,501.30 × 285,728.76
  4. Step 4: Simplify right side
    371,923.29x = 146,722,089,707.39
  5. Step 5: Solve for x
    x = 146,722,089,707.39/371,923.29
  6. Step 6: Final answer
    x = 394,495.57

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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.