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Finding the Fourth Proportional to 519,728.16, 779,527.44 and 145,780.32

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Solution

The fourth proportional to 519,728.16, 779,527.44 and 145,780.32 is: 218,652.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,728.16 : 779,527.44 = 145,780.32 : x
  2. Step 2: Convert to fraction form
    519,728.16/779,527.44 = 145,780.32/x
  3. Step 3: Cross multiply
    519,728.16x = 779,527.44 × 145,780.32
  4. Step 4: Simplify right side
    519,728.16x = 113,639,759,651.98
  5. Step 5: Solve for x
    x = 113,639,759,651.98/519,728.16
  6. Step 6: Final answer
    x = 218,652.30

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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.