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Finding the Fourth Proportional to 520,025.20, 780,037.80 and 362,431.60

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Solution

The fourth proportional to 520,025.20, 780,037.80 and 362,431.60 is: 543,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,025.20 : 780,037.80 = 362,431.60 : x
  2. Step 2: Convert to fraction form
    520,025.20/780,037.80 = 362,431.60/x
  3. Step 3: Cross multiply
    520,025.20x = 780,037.80 × 362,431.60
  4. Step 4: Simplify right side
    520,025.20x = 282,710,347,914.48
  5. Step 5: Solve for x
    x = 282,710,347,914.48/520,025.20
  6. Step 6: Final answer
    x = 543,647.40

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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.