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Finding the Fourth Proportional to 644,328.30, 966,492.45 and 539,352.30

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Solution

The fourth proportional to 644,328.30, 966,492.45 and 539,352.30 is: 809,028.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,328.30 : 966,492.45 = 539,352.30 : x
  2. Step 2: Convert to fraction form
    644,328.30/966,492.45 = 539,352.30/x
  3. Step 3: Cross multiply
    644,328.30x = 966,492.45 × 539,352.30
  4. Step 4: Simplify right side
    644,328.30x = 521,279,925,840.14
  5. Step 5: Solve for x
    x = 521,279,925,840.14/644,328.30
  6. Step 6: Final answer
    x = 809,028.45

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Double scale
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Similar ratio
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1.5x scale

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.