Home / 647,541.10-971,311.65-204,309.10

Finding the Fourth Proportional to 647,541.10, 971,311.65 and 204,309.10

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Solution

The fourth proportional to 647,541.10, 971,311.65 and 204,309.10 is: 306,463.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,541.10 : 971,311.65 = 204,309.10 : x
  2. Step 2: Convert to fraction form
    647,541.10/971,311.65 = 204,309.10/x
  3. Step 3: Cross multiply
    647,541.10x = 971,311.65 × 204,309.10
  4. Step 4: Simplify right side
    647,541.10x = 198,447,809,031.02
  5. Step 5: Solve for x
    x = 198,447,809,031.02/647,541.10
  6. Step 6: Final answer
    x = 306,463.65

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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.