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Finding the Fourth Proportional to 672,274.85, 1,008,412.28 and 520,059.65

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Solution

The fourth proportional to 672,274.85, 1,008,412.28 and 520,059.65 is: 780,089.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,274.85 : 1,008,412.28 = 520,059.65 : x
  2. Step 2: Convert to fraction form
    672,274.85/1,008,412.28 = 520,059.65/x
  3. Step 3: Cross multiply
    672,274.85x = 1,008,412.28 × 520,059.65
  4. Step 4: Simplify right side
    672,274.85x = 524,434,537,392.50
  5. Step 5: Solve for x
    x = 524,434,537,392.50/672,274.85
  6. Step 6: Final answer
    x = 780,089.48

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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.