Home / 709,213.91-1,064,017.69-393,892.25

Finding the Fourth Proportional to 709,213.91, 1,064,017.69 and 393,892.25

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Solution

The fourth proportional to 709,213.91, 1,064,017.69 and 393,892.25 is: 590,947.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,213.91 : 1,064,017.69 = 393,892.25 : x
  2. Step 2: Convert to fraction form
    709,213.91/1,064,017.69 = 393,892.25/x
  3. Step 3: Cross multiply
    709,213.91x = 1,064,017.69 × 393,892.25
  4. Step 4: Simplify right side
    709,213.91x = 419,108,315,649.08
  5. Step 5: Solve for x
    x = 419,108,315,649.08/709,213.91
  6. Step 6: Final answer
    x = 590,947.69

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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.