Home / 628,769.27-867,701.73-342,289.28

Finding the Fourth Proportional to 628,769.27, 867,701.73 and 342,289.28

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Solution

The fourth proportional to 628,769.27, 867,701.73 and 342,289.28 is: 472,359.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,769.27 : 867,701.73 = 342,289.28 : x
  2. Step 2: Convert to fraction form
    628,769.27/867,701.73 = 342,289.28/x
  3. Step 3: Cross multiply
    628,769.27x = 867,701.73 × 342,289.28
  4. Step 4: Simplify right side
    628,769.27x = 297,005,000,416.45
  5. Step 5: Solve for x
    x = 297,005,000,416.45/628,769.27
  6. Step 6: Final answer
    x = 472,359.28

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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.