Home / 740,721.80-1,111,082.70-291,293.30

Finding the Fourth Proportional to 740,721.80, 1,111,082.70 and 291,293.30

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Solution

The fourth proportional to 740,721.80, 1,111,082.70 and 291,293.30 is: 436,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,721.80 : 1,111,082.70 = 291,293.30 : x
  2. Step 2: Convert to fraction form
    740,721.80/1,111,082.70 = 291,293.30/x
  3. Step 3: Cross multiply
    740,721.80x = 1,111,082.70 × 291,293.30
  4. Step 4: Simplify right side
    740,721.80x = 323,650,946,255.91
  5. Step 5: Solve for x
    x = 323,650,946,255.91/740,721.80
  6. Step 6: Final answer
    x = 436,939.95

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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.