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Finding the Fourth Proportional to 528,365.34, 729,144.09 and 302,015.70

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Solution

The fourth proportional to 528,365.34, 729,144.09 and 302,015.70 is: 416,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,365.34 : 729,144.09 = 302,015.70 : x
  2. Step 2: Convert to fraction form
    528,365.34/729,144.09 = 302,015.70/x
  3. Step 3: Cross multiply
    528,365.34x = 729,144.09 × 302,015.70
  4. Step 4: Simplify right side
    528,365.34x = 220,212,962,742.21
  5. Step 5: Solve for x
    x = 220,212,962,742.21/528,365.34
  6. Step 6: Final answer
    x = 416,781.62

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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.