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Finding the Fourth Proportional to 428,562.01, 642,950.08 and 302,448.43

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Solution

The fourth proportional to 428,562.01, 642,950.08 and 302,448.43 is: 453,748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,562.01 : 642,950.08 = 302,448.43 : x
  2. Step 2: Convert to fraction form
    428,562.01/642,950.08 = 302,448.43/x
  3. Step 3: Cross multiply
    428,562.01x = 642,950.08 × 302,448.43
  4. Step 4: Simplify right side
    428,562.01x = 194,459,242,264.37
  5. Step 5: Solve for x
    x = 194,459,242,264.37/428,562.01
  6. Step 6: Final answer
    x = 453,748.20

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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.