Home / 739,665.28-1,020,728.11-412,983.30

Finding the Fourth Proportional to 739,665.28, 1,020,728.11 and 412,983.30

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Solution

The fourth proportional to 739,665.28, 1,020,728.11 and 412,983.30 is: 569,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,665.28 : 1,020,728.11 = 412,983.30 : x
  2. Step 2: Convert to fraction form
    739,665.28/1,020,728.11 = 412,983.30/x
  3. Step 3: Cross multiply
    739,665.28x = 1,020,728.11 × 412,983.30
  4. Step 4: Simplify right side
    739,665.28x = 421,543,663,270.56
  5. Step 5: Solve for x
    x = 421,543,663,270.56/739,665.28
  6. Step 6: Final answer
    x = 569,911.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.