Home / 521,747.60-783,571.80-456,429.20

Finding the Fourth Proportional to 521,747.60, 783,571.80 and 456,429.20

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Solution

The fourth proportional to 521,747.60, 783,571.80 and 456,429.20 is: 685,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,747.60 : 783,571.80 = 456,429.20 : x
  2. Step 2: Convert to fraction form
    521,747.60/783,571.80 = 456,429.20/x
  3. Step 3: Cross multiply
    521,747.60x = 783,571.80 × 456,429.20
  4. Step 4: Simplify right side
    521,747.60x = 357,645,049,816.56
  5. Step 5: Solve for x
    x = 357,645,049,816.56/521,747.60
  6. Step 6: Final answer
    x = 685,475.22

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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.