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Finding the Fourth Proportional to 641,324.72, 884,642.58 and 423,535.40

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Solution

The fourth proportional to 641,324.72, 884,642.58 and 423,535.40 is: 584,224.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,324.72 : 884,642.58 = 423,535.40 : x
  2. Step 2: Convert to fraction form
    641,324.72/884,642.58 = 423,535.40/x
  3. Step 3: Cross multiply
    641,324.72x = 884,642.58 × 423,535.40
  4. Step 4: Simplify right side
    641,324.72x = 374,677,448,977.33
  5. Step 5: Solve for x
    x = 374,677,448,977.33/641,324.72
  6. Step 6: Final answer
    x = 584,224.24

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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.