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Finding the Fourth Proportional to 505,367.10, 697,402.71 and 275,916.78

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Solution

The fourth proportional to 505,367.10, 697,402.71 and 275,916.78 is: 380,763.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,367.10 : 697,402.71 = 275,916.78 : x
  2. Step 2: Convert to fraction form
    505,367.10/697,402.71 = 275,916.78/x
  3. Step 3: Cross multiply
    505,367.10x = 697,402.71 × 275,916.78
  4. Step 4: Simplify right side
    505,367.10x = 192,425,110,106.47
  5. Step 5: Solve for x
    x = 192,425,110,106.47/505,367.10
  6. Step 6: Final answer
    x = 380,763.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.