Home / 645,942.79-891,394.61-359,457.97

Finding the Fourth Proportional to 645,942.79, 891,394.61 and 359,457.97

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Solution

The fourth proportional to 645,942.79, 891,394.61 and 359,457.97 is: 496,048.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,942.79 : 891,394.61 = 359,457.97 : x
  2. Step 2: Convert to fraction form
    645,942.79/891,394.61 = 359,457.97/x
  3. Step 3: Cross multiply
    645,942.79x = 891,394.61 × 359,457.97
  4. Step 4: Simplify right side
    645,942.79x = 320,418,895,182.25
  5. Step 5: Solve for x
    x = 320,418,895,182.25/645,942.79
  6. Step 6: Final answer
    x = 496,048.41

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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.