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Finding the Fourth Proportional to 505,070.60, 697,012.12 and 275,642.64

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Solution

The fourth proportional to 505,070.60, 697,012.12 and 275,642.64 is: 380,394.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,070.60 : 697,012.12 = 275,642.64 : x
  2. Step 2: Convert to fraction form
    505,070.60/697,012.12 = 275,642.64/x
  3. Step 3: Cross multiply
    505,070.60x = 697,012.12 × 275,642.64
  4. Step 4: Simplify right side
    505,070.60x = 192,126,259,490.58
  5. Step 5: Solve for x
    x = 192,126,259,490.58/505,070.60
  6. Step 6: Final answer
    x = 380,394.86

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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.