Home / 920,016.96-1,379,934.72-288,913.92

Finding the Fourth Proportional to 920,016.96, 1,379,934.72 and 288,913.92

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Solution

The fourth proportional to 920,016.96, 1,379,934.72 and 288,913.92 is: 433,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,016.96 : 1,379,934.72 = 288,913.92 : x
  2. Step 2: Convert to fraction form
    920,016.96/1,379,934.72 = 288,913.92/x
  3. Step 3: Cross multiply
    920,016.96x = 1,379,934.72 × 288,913.92
  4. Step 4: Simplify right side
    920,016.96x = 398,682,349,299.30
  5. Step 5: Solve for x
    x = 398,682,349,299.30/920,016.96
  6. Step 6: Final answer
    x = 433,342.39

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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.