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Finding the Fourth Proportional to 676,218.54, 933,181.65 and 374,412.54

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Solution

The fourth proportional to 676,218.54, 933,181.65 and 374,412.54 is: 516,689.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,218.54 : 933,181.65 = 374,412.54 : x
  2. Step 2: Convert to fraction form
    676,218.54/933,181.65 = 374,412.54/x
  3. Step 3: Cross multiply
    676,218.54x = 933,181.65 × 374,412.54
  4. Step 4: Simplify right side
    676,218.54x = 349,394,911,857.89
  5. Step 5: Solve for x
    x = 349,394,911,857.89/676,218.54
  6. Step 6: Final answer
    x = 516,689.34

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.