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Finding the Fourth Proportional to 641,555.28, 885,268.62 and 369,712.26

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Solution

The fourth proportional to 641,555.28, 885,268.62 and 369,712.26 is: 510,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,555.28 : 885,268.62 = 369,712.26 : x
  2. Step 2: Convert to fraction form
    641,555.28/885,268.62 = 369,712.26/x
  3. Step 3: Cross multiply
    641,555.28x = 885,268.62 × 369,712.26
  4. Step 4: Simplify right side
    641,555.28x = 327,294,662,207.28
  5. Step 5: Solve for x
    x = 327,294,662,207.28/641,555.28
  6. Step 6: Final answer
    x = 510,158.16

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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.