Home / 920,605.50-1,380,925.53-255,774.78

Finding the Fourth Proportional to 920,605.50, 1,380,925.53 and 255,774.78

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Solution

The fourth proportional to 920,605.50, 1,380,925.53 and 255,774.78 is: 383,666.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,605.50 : 1,380,925.53 = 255,774.78 : x
  2. Step 2: Convert to fraction form
    920,605.50/1,380,925.53 = 255,774.78/x
  3. Step 3: Cross multiply
    920,605.50x = 1,380,925.53 × 255,774.78
  4. Step 4: Simplify right side
    920,605.50x = 353,205,923,632.13
  5. Step 5: Solve for x
    x = 353,205,923,632.13/920,605.50
  6. Step 6: Final answer
    x = 383,666.97

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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.