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Finding the Fourth Proportional to 606,407.40, 909,611.10 and 382,021.20

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Solution

The fourth proportional to 606,407.40, 909,611.10 and 382,021.20 is: 573,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,407.40 : 909,611.10 = 382,021.20 : x
  2. Step 2: Convert to fraction form
    606,407.40/909,611.10 = 382,021.20/x
  3. Step 3: Cross multiply
    606,407.40x = 909,611.10 × 382,021.20
  4. Step 4: Simplify right side
    606,407.40x = 347,490,723,955.32
  5. Step 5: Solve for x
    x = 347,490,723,955.32/606,407.40
  6. Step 6: Final answer
    x = 573,031.80

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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.