Home / 743,145.90-1,114,718.85-443,964.30

Finding the Fourth Proportional to 743,145.90, 1,114,718.85 and 443,964.30

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Solution

The fourth proportional to 743,145.90, 1,114,718.85 and 443,964.30 is: 665,946.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,145.90 : 1,114,718.85 = 443,964.30 : x
  2. Step 2: Convert to fraction form
    743,145.90/1,114,718.85 = 443,964.30/x
  3. Step 3: Cross multiply
    743,145.90x = 1,114,718.85 × 443,964.30
  4. Step 4: Simplify right side
    743,145.90x = 494,895,373,937.06
  5. Step 5: Solve for x
    x = 494,895,373,937.06/743,145.90
  6. Step 6: Final answer
    x = 665,946.45

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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.