Home / 920,078.91-1,380,173.50-288,992.72

Finding the Fourth Proportional to 920,078.91, 1,380,173.50 and 288,992.72

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Solution

The fourth proportional to 920,078.91, 1,380,173.50 and 288,992.72 is: 433,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,078.91 : 1,380,173.50 = 288,992.72 : x
  2. Step 2: Convert to fraction form
    920,078.91/1,380,173.50 = 288,992.72/x
  3. Step 3: Cross multiply
    920,078.91x = 1,380,173.50 × 288,992.72
  4. Step 4: Simplify right side
    920,078.91x = 398,860,097,648.60
  5. Step 5: Solve for x
    x = 398,860,097,648.60/920,078.91
  6. Step 6: Final answer
    x = 433,506.40

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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.