Home / 946,728.75-1,420,105.70-315,642.77

Finding the Fourth Proportional to 946,728.75, 1,420,105.70 and 315,642.77

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Solution

The fourth proportional to 946,728.75, 1,420,105.70 and 315,642.77 is: 473,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    946,728.75 : 1,420,105.70 = 315,642.77 : x
  2. Step 2: Convert to fraction form
    946,728.75/1,420,105.70 = 315,642.77/x
  3. Step 3: Cross multiply
    946,728.75x = 1,420,105.70 × 315,642.77
  4. Step 4: Simplify right side
    946,728.75x = 448,246,096,840.79
  5. Step 5: Solve for x
    x = 448,246,096,840.79/946,728.75
  6. Step 6: Final answer
    x = 473,468.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.