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Finding the Fourth Proportional to 578,428.40, 867,642.60 and 263,500.40

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Solution

The fourth proportional to 578,428.40, 867,642.60 and 263,500.40 is: 395,250.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,428.40 : 867,642.60 = 263,500.40 : x
  2. Step 2: Convert to fraction form
    578,428.40/867,642.60 = 263,500.40/x
  3. Step 3: Cross multiply
    578,428.40x = 867,642.60 × 263,500.40
  4. Step 4: Simplify right side
    578,428.40x = 228,624,172,157.04
  5. Step 5: Solve for x
    x = 228,624,172,157.04/578,428.40
  6. Step 6: Final answer
    x = 395,250.60

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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.