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Finding the Fourth Proportional to 509,030.38, 702,470.36 and 279,608.88

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Solution

The fourth proportional to 509,030.38, 702,470.36 and 279,608.88 is: 385,864.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,030.38 : 702,470.36 = 279,608.88 : x
  2. Step 2: Convert to fraction form
    509,030.38/702,470.36 = 279,608.88/x
  3. Step 3: Cross multiply
    509,030.38x = 702,470.36 × 279,608.88
  4. Step 4: Simplify right side
    509,030.38x = 196,416,950,592.80
  5. Step 5: Solve for x
    x = 196,416,950,592.80/509,030.38
  6. Step 6: Final answer
    x = 385,864.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.