Home / 428,565.02-642,954.58-302,451.42

Finding the Fourth Proportional to 428,565.02, 642,954.58 and 302,451.42

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Solution

The fourth proportional to 428,565.02, 642,954.58 and 302,451.42 is: 453,752.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,565.02 : 642,954.58 = 302,451.42 : x
  2. Step 2: Convert to fraction form
    428,565.02/642,954.58 = 302,451.42/x
  3. Step 3: Cross multiply
    428,565.02x = 642,954.58 × 302,451.42
  4. Step 4: Simplify right side
    428,565.02x = 194,462,525,716.50
  5. Step 5: Solve for x
    x = 194,462,525,716.50/428,565.02
  6. Step 6: Final answer
    x = 453,752.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.