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Finding the Fourth Proportional to 612,248.22, 917,738.10 and 443,346.21

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Solution

The fourth proportional to 612,248.22, 917,738.10 and 443,346.21 is: 664,560.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,248.22 : 917,738.10 = 443,346.21 : x
  2. Step 2: Convert to fraction form
    612,248.22/917,738.10 = 443,346.21/x
  3. Step 3: Cross multiply
    612,248.22x = 917,738.10 × 443,346.21
  4. Step 4: Simplify right side
    612,248.22x = 406,875,708,407.60
  5. Step 5: Solve for x
    x = 406,875,708,407.60/612,248.22
  6. Step 6: Final answer
    x = 664,560.05

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Double scale
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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.