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Finding the Fourth Proportional to 522,021.80, 783,615.90 and 487,758.80

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Solution

The fourth proportional to 522,021.80, 783,615.90 and 487,758.80 is: 732,183.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,021.80 : 783,615.90 = 487,758.80 : x
  2. Step 2: Convert to fraction form
    522,021.80/783,615.90 = 487,758.80/x
  3. Step 3: Cross multiply
    522,021.80x = 783,615.90 × 487,758.80
  4. Step 4: Simplify right side
    522,021.80x = 382,215,551,044.92
  5. Step 5: Solve for x
    x = 382,215,551,044.92/522,021.80
  6. Step 6: Final answer
    x = 732,183.12

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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.