Home / 603,711.20-905,566.80-288,783.20

Finding the Fourth Proportional to 603,711.20, 905,566.80 and 288,783.20

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Solution

The fourth proportional to 603,711.20, 905,566.80 and 288,783.20 is: 433,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,711.20 : 905,566.80 = 288,783.20 : x
  2. Step 2: Convert to fraction form
    603,711.20/905,566.80 = 288,783.20/x
  3. Step 3: Cross multiply
    603,711.20x = 905,566.80 × 288,783.20
  4. Step 4: Simplify right side
    603,711.20x = 261,512,478,317.76
  5. Step 5: Solve for x
    x = 261,512,478,317.76/603,711.20
  6. Step 6: Final answer
    x = 433,174.80

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Double scale
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Similar ratio
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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.