Home / 505,623.72-697,742.40-279,264.36

Finding the Fourth Proportional to 505,623.72, 697,742.40 and 279,264.36

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Solution

The fourth proportional to 505,623.72, 697,742.40 and 279,264.36 is: 385,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,623.72 : 697,742.40 = 279,264.36 : x
  2. Step 2: Convert to fraction form
    505,623.72/697,742.40 = 279,264.36/x
  3. Step 3: Cross multiply
    505,623.72x = 697,742.40 × 279,264.36
  4. Step 4: Simplify right side
    505,623.72x = 194,854,584,780.86
  5. Step 5: Solve for x
    x = 194,854,584,780.86/505,623.72
  6. Step 6: Final answer
    x = 385,374.69

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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.