Home / 509,746.20-764,616.60-130,666.20

Finding the Fourth Proportional to 509,746.20, 764,616.60 and 130,666.20

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Solution

The fourth proportional to 509,746.20, 764,616.60 and 130,666.20 is: 195,998.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,746.20 : 764,616.60 = 130,666.20 : x
  2. Step 2: Convert to fraction form
    509,746.20/764,616.60 = 130,666.20/x
  3. Step 3: Cross multiply
    509,746.20x = 764,616.60 × 130,666.20
  4. Step 4: Simplify right side
    509,746.20x = 99,909,545,578.92
  5. Step 5: Solve for x
    x = 99,909,545,578.92/509,746.20
  6. Step 6: Final answer
    x = 195,998.61

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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.