Home / 630,619.85-870,027.93-485,470.01

Finding the Fourth Proportional to 630,619.85, 870,027.93 and 485,470.01

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Solution

The fourth proportional to 630,619.85, 870,027.93 and 485,470.01 is: 669,773.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,619.85 : 870,027.93 = 485,470.01 : x
  2. Step 2: Convert to fraction form
    630,619.85/870,027.93 = 485,470.01/x
  3. Step 3: Cross multiply
    630,619.85x = 870,027.93 × 485,470.01
  4. Step 4: Simplify right side
    630,619.85x = 422,372,463,527.24
  5. Step 5: Solve for x
    x = 422,372,463,527.24/630,619.85
  6. Step 6: Final answer
    x = 669,773.50

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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.