Home / 753,631.40-1,130,447.10-280,218.80

Finding the Fourth Proportional to 753,631.40, 1,130,447.10 and 280,218.80

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Solution

The fourth proportional to 753,631.40, 1,130,447.10 and 280,218.80 is: 420,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,631.40 : 1,130,447.10 = 280,218.80 : x
  2. Step 2: Convert to fraction form
    753,631.40/1,130,447.10 = 280,218.80/x
  3. Step 3: Cross multiply
    753,631.40x = 1,130,447.10 × 280,218.80
  4. Step 4: Simplify right side
    753,631.40x = 316,772,529,825.48
  5. Step 5: Solve for x
    x = 316,772,529,825.48/753,631.40
  6. Step 6: Final answer
    x = 420,328.20

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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.