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Finding the Fourth Proportional to 506,421.90, 759,414.15 and 253,604.70

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Solution

The fourth proportional to 506,421.90, 759,414.15 and 253,604.70 is: 380,297.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,421.90 : 759,414.15 = 253,604.70 : x
  2. Step 2: Convert to fraction form
    506,421.90/759,414.15 = 253,604.70/x
  3. Step 3: Cross multiply
    506,421.90x = 759,414.15 × 253,604.70
  4. Step 4: Simplify right side
    506,421.90x = 192,590,997,686.51
  5. Step 5: Solve for x
    x = 192,590,997,686.51/506,421.90
  6. Step 6: Final answer
    x = 380,297.53

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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.