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Finding the Fourth Proportional to 520,020.20, 780,030.30 and 362,426.60

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Solution

The fourth proportional to 520,020.20, 780,030.30 and 362,426.60 is: 543,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,020.20 : 780,030.30 = 362,426.60 : x
  2. Step 2: Convert to fraction form
    520,020.20/780,030.30 = 362,426.60/x
  3. Step 3: Cross multiply
    520,020.20x = 780,030.30 × 362,426.60
  4. Step 4: Simplify right side
    520,020.20x = 282,703,729,525.98
  5. Step 5: Solve for x
    x = 282,703,729,525.98/520,020.20
  6. Step 6: Final answer
    x = 543,639.90

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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.