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Finding the Fourth Proportional to 628,081.70, 942,122.55 and 450,934.70

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Solution

The fourth proportional to 628,081.70, 942,122.55 and 450,934.70 is: 676,402.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,081.70 : 942,122.55 = 450,934.70 : x
  2. Step 2: Convert to fraction form
    628,081.70/942,122.55 = 450,934.70/x
  3. Step 3: Cross multiply
    628,081.70x = 942,122.55 × 450,934.70
  4. Step 4: Simplify right side
    628,081.70x = 424,835,749,447.49
  5. Step 5: Solve for x
    x = 424,835,749,447.49/628,081.70
  6. Step 6: Final answer
    x = 676,402.05

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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.