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Finding the Fourth Proportional to 505,077.90, 697,011.56 and 275,636.98

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Solution

The fourth proportional to 505,077.90, 697,011.56 and 275,636.98 is: 380,381.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,077.90 : 697,011.56 = 275,636.98 : x
  2. Step 2: Convert to fraction form
    505,077.90/697,011.56 = 275,636.98/x
  3. Step 3: Cross multiply
    505,077.90x = 697,011.56 × 275,636.98
  4. Step 4: Simplify right side
    505,077.90x = 192,122,161,423.49
  5. Step 5: Solve for x
    x = 192,122,161,423.49/505,077.90
  6. Step 6: Final answer
    x = 380,381.25

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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.