Home / 428,564.03-642,953.08-302,450.59

Finding the Fourth Proportional to 428,564.03, 642,953.08 and 302,450.59

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Solution

The fourth proportional to 428,564.03, 642,953.08 and 302,450.59 is: 453,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,564.03 : 642,953.08 = 302,450.59 : x
  2. Step 2: Convert to fraction form
    428,564.03/642,953.08 = 302,450.59/x
  3. Step 3: Cross multiply
    428,564.03x = 642,953.08 × 302,450.59
  4. Step 4: Simplify right side
    428,564.03x = 194,461,537,868.79
  5. Step 5: Solve for x
    x = 194,461,537,868.79/428,564.03
  6. Step 6: Final answer
    x = 453,751.42

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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.