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Finding the Fourth Proportional to 505,385.37, 697,427.15 and 279,032.49

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Solution

The fourth proportional to 505,385.37, 697,427.15 and 279,032.49 is: 385,062.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,385.37 : 697,427.15 = 279,032.49 : x
  2. Step 2: Convert to fraction form
    505,385.37/697,427.15 = 279,032.49/x
  3. Step 3: Cross multiply
    505,385.37x = 697,427.15 × 279,032.49
  4. Step 4: Simplify right side
    505,385.37x = 194,604,832,862.94
  5. Step 5: Solve for x
    x = 194,604,832,862.94/505,385.37
  6. Step 6: Final answer
    x = 385,062.26

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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.