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Finding the Fourth Proportional to 641,382.71, 885,202.04 and 369,397.67

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Solution

The fourth proportional to 641,382.71, 885,202.04 and 369,397.67 is: 509,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,382.71 : 885,202.04 = 369,397.67 : x
  2. Step 2: Convert to fraction form
    641,382.71/885,202.04 = 369,397.67/x
  3. Step 3: Cross multiply
    641,382.71x = 885,202.04 × 369,397.67
  4. Step 4: Simplify right side
    641,382.71x = 326,991,574,191.75
  5. Step 5: Solve for x
    x = 326,991,574,191.75/641,382.71
  6. Step 6: Final answer
    x = 509,822.87

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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.