Home / 505,103.40-697,041.24-278,747.28

Finding the Fourth Proportional to 505,103.40, 697,041.24 and 278,747.28

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Solution

The fourth proportional to 505,103.40, 697,041.24 and 278,747.28 is: 384,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,103.40 : 697,041.24 = 278,747.28 : x
  2. Step 2: Convert to fraction form
    505,103.40/697,041.24 = 278,747.28/x
  3. Step 3: Cross multiply
    505,103.40x = 697,041.24 × 278,747.28
  4. Step 4: Simplify right side
    505,103.40x = 194,298,349,697.83
  5. Step 5: Solve for x
    x = 194,298,349,697.83/505,103.40
  6. Step 6: Final answer
    x = 384,670.45

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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.