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Finding the Fourth Proportional to 489,042.10, 733,563.15 and 339,742.90

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Solution

The fourth proportional to 489,042.10, 733,563.15 and 339,742.90 is: 509,614.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,042.10 : 733,563.15 = 339,742.90 : x
  2. Step 2: Convert to fraction form
    489,042.10/733,563.15 = 339,742.90/x
  3. Step 3: Cross multiply
    489,042.10x = 733,563.15 × 339,742.90
  4. Step 4: Simplify right side
    489,042.10x = 249,222,871,914.14
  5. Step 5: Solve for x
    x = 249,222,871,914.14/489,042.10
  6. Step 6: Final answer
    x = 509,614.35

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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.