Home / 743,562.80-1,115,344.20-211,031.60

Finding the Fourth Proportional to 743,562.80, 1,115,344.20 and 211,031.60

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Solution

The fourth proportional to 743,562.80, 1,115,344.20 and 211,031.60 is: 316,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,562.80 : 1,115,344.20 = 211,031.60 : x
  2. Step 2: Convert to fraction form
    743,562.80/1,115,344.20 = 211,031.60/x
  3. Step 3: Cross multiply
    743,562.80x = 1,115,344.20 × 211,031.60
  4. Step 4: Simplify right side
    743,562.80x = 235,372,871,076.72
  5. Step 5: Solve for x
    x = 235,372,871,076.72/743,562.80
  6. Step 6: Final answer
    x = 316,547.40

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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.