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Finding the Fourth Proportional to 512,658.32, 768,318.62 and 370,980.81

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Solution

The fourth proportional to 512,658.32, 768,318.62 and 370,980.81 is: 555,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,658.32 : 768,318.62 = 370,980.81 : x
  2. Step 2: Convert to fraction form
    512,658.32/768,318.62 = 370,980.81/x
  3. Step 3: Cross multiply
    512,658.32x = 768,318.62 × 370,980.81
  4. Step 4: Simplify right side
    512,658.32x = 285,031,462,130.78
  5. Step 5: Solve for x
    x = 285,031,462,130.78/512,658.32
  6. Step 6: Final answer
    x = 555,987.20

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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.