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Finding the Fourth Proportional to 578,334.40, 798,126.40 and 320,211.33

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Solution

The fourth proportional to 578,334.40, 798,126.40 and 320,211.33 is: 441,905.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,334.40 : 798,126.40 = 320,211.33 : x
  2. Step 2: Convert to fraction form
    578,334.40/798,126.40 = 320,211.33/x
  3. Step 3: Cross multiply
    578,334.40x = 798,126.40 × 320,211.33
  4. Step 4: Simplify right side
    578,334.40x = 255,569,118,059.75
  5. Step 5: Solve for x
    x = 255,569,118,059.75/578,334.40
  6. Step 6: Final answer
    x = 441,905.44

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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.