Home / 470,742.03-708,674.43-428,890.95

Finding the Fourth Proportional to 470,742.03, 708,674.43 and 428,890.95

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Solution

The fourth proportional to 470,742.03, 708,674.43 and 428,890.95 is: 645,670.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,742.03 : 708,674.43 = 428,890.95 : x
  2. Step 2: Convert to fraction form
    470,742.03/708,674.43 = 428,890.95/x
  3. Step 3: Cross multiply
    470,742.03x = 708,674.43 × 428,890.95
  4. Step 4: Simplify right side
    470,742.03x = 303,944,049,523.41
  5. Step 5: Solve for x
    x = 303,944,049,523.41/470,742.03
  6. Step 6: Final answer
    x = 645,670.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.