Home / 428,624.30-641,675.20-286,116.10

Finding the Fourth Proportional to 428,624.30, 641,675.20 and 286,116.10

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Solution

The fourth proportional to 428,624.30, 641,675.20 and 286,116.10 is: 428,332.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,624.30 : 641,675.20 = 286,116.10 : x
  2. Step 2: Convert to fraction form
    428,624.30/641,675.20 = 286,116.10/x
  3. Step 3: Cross multiply
    428,624.30x = 641,675.20 × 286,116.10
  4. Step 4: Simplify right side
    428,624.30x = 183,593,604,810.07
  5. Step 5: Solve for x
    x = 183,593,604,810.07/428,624.30
  6. Step 6: Final answer
    x = 428,332.24

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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.