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Finding the Fourth Proportional to 509,552.80, 764,547.90 and 260,234.80

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Solution

The fourth proportional to 509,552.80, 764,547.90 and 260,234.80 is: 390,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,552.80 : 764,547.90 = 260,234.80 : x
  2. Step 2: Convert to fraction form
    509,552.80/764,547.90 = 260,234.80/x
  3. Step 3: Cross multiply
    509,552.80x = 764,547.90 × 260,234.80
  4. Step 4: Simplify right side
    509,552.80x = 198,961,969,846.92
  5. Step 5: Solve for x
    x = 198,961,969,846.92/509,552.80
  6. Step 6: Final answer
    x = 390,463.89

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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.