Home / 639,631.50-882,769.23-371,359.50

Finding the Fourth Proportional to 639,631.50, 882,769.23 and 371,359.50

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Solution

The fourth proportional to 639,631.50, 882,769.23 and 371,359.50 is: 512,521.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,631.50 : 882,769.23 = 371,359.50 : x
  2. Step 2: Convert to fraction form
    639,631.50/882,769.23 = 371,359.50/x
  3. Step 3: Cross multiply
    639,631.50x = 882,769.23 × 371,359.50
  4. Step 4: Simplify right side
    639,631.50x = 327,824,739,868.19
  5. Step 5: Solve for x
    x = 327,824,739,868.19/639,631.50
  6. Step 6: Final answer
    x = 512,521.26

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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.