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Finding the Fourth Proportional to 628,092.20, 942,138.30 and 450,945.20

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Solution

The fourth proportional to 628,092.20, 942,138.30 and 450,945.20 is: 676,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,092.20 : 942,138.30 = 450,945.20 : x
  2. Step 2: Convert to fraction form
    628,092.20/942,138.30 = 450,945.20/x
  3. Step 3: Cross multiply
    628,092.20x = 942,138.30 × 450,945.20
  4. Step 4: Simplify right side
    628,092.20x = 424,852,744,121.16
  5. Step 5: Solve for x
    x = 424,852,744,121.16/628,092.20
  6. Step 6: Final answer
    x = 676,417.80

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Half scale
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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.