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Finding the Fourth Proportional to 505,070.73, 697,012.30 and 275,642.77

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Solution

The fourth proportional to 505,070.73, 697,012.30 and 275,642.77 is: 380,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,070.73 : 697,012.30 = 275,642.77 : x
  2. Step 2: Convert to fraction form
    505,070.73/697,012.30 = 275,642.77/x
  3. Step 3: Cross multiply
    505,070.73x = 697,012.30 × 275,642.77
  4. Step 4: Simplify right side
    505,070.73x = 192,126,403,352.96
  5. Step 5: Solve for x
    x = 192,126,403,352.96/505,070.73
  6. Step 6: Final answer
    x = 380,395.05

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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.