Home / 509,823.88-764,837.91-285,503.32

Finding the Fourth Proportional to 509,823.88, 764,837.91 and 285,503.32

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Solution

The fourth proportional to 509,823.88, 764,837.91 and 285,503.32 is: 428,312.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,823.88 : 764,837.91 = 285,503.32 : x
  2. Step 2: Convert to fraction form
    509,823.88/764,837.91 = 285,503.32/x
  3. Step 3: Cross multiply
    509,823.88x = 764,837.91 × 285,503.32
  4. Step 4: Simplify right side
    509,823.88x = 218,363,762,566.86
  5. Step 5: Solve for x
    x = 218,363,762,566.86/509,823.88
  6. Step 6: Final answer
    x = 428,312.15

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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.