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Finding the Fourth Proportional to 528,423.75, 729,224.82 and 302,074.11

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Solution

The fourth proportional to 528,423.75, 729,224.82 and 302,074.11 is: 416,862.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,423.75 : 729,224.82 = 302,074.11 : x
  2. Step 2: Convert to fraction form
    528,423.75/729,224.82 = 302,074.11/x
  3. Step 3: Cross multiply
    528,423.75x = 729,224.82 × 302,074.11
  4. Step 4: Simplify right side
    528,423.75x = 220,279,938,491.41
  5. Step 5: Solve for x
    x = 220,279,938,491.41/528,423.75
  6. Step 6: Final answer
    x = 416,862.30

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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.