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Finding the Fourth Proportional to 628,768.67, 867,700.88 and 342,288.68

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Solution

The fourth proportional to 628,768.67, 867,700.88 and 342,288.68 is: 472,358.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,768.67 : 867,700.88 = 342,288.68 : x
  2. Step 2: Convert to fraction form
    628,768.67/867,700.88 = 342,288.68/x
  3. Step 3: Cross multiply
    628,768.67x = 867,700.88 × 342,288.68
  4. Step 4: Simplify right side
    628,768.67x = 297,004,182,800.09
  5. Step 5: Solve for x
    x = 297,004,182,800.09/628,768.67
  6. Step 6: Final answer
    x = 472,358.44

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1.5x scale

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.