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Finding the Fourth Proportional to 621,308.75, 930,468.43 and 354,259.65

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Solution

The fourth proportional to 621,308.75, 930,468.43 and 354,259.65 is: 530,537.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,308.75 : 930,468.43 = 354,259.65 : x
  2. Step 2: Convert to fraction form
    621,308.75/930,468.43 = 354,259.65/x
  3. Step 3: Cross multiply
    621,308.75x = 930,468.43 × 354,259.65
  4. Step 4: Simplify right side
    621,308.75x = 329,627,415,695.51
  5. Step 5: Solve for x
    x = 329,627,415,695.51/621,308.75
  6. Step 6: Final answer
    x = 530,537.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.