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Finding the Fourth Proportional to 528,408.75, 729,204.12 and 302,059.11

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Solution

The fourth proportional to 528,408.75, 729,204.12 and 302,059.11 is: 416,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,408.75 : 729,204.12 = 302,059.11 : x
  2. Step 2: Convert to fraction form
    528,408.75/729,204.12 = 302,059.11/x
  3. Step 3: Cross multiply
    528,408.75x = 729,204.12 × 302,059.11
  4. Step 4: Simplify right side
    528,408.75x = 220,262,747,495.53
  5. Step 5: Solve for x
    x = 220,262,747,495.53/528,408.75
  6. Step 6: Final answer
    x = 416,841.60

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Double scale
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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.