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Finding the Fourth Proportional to 509,050.76, 702,495.81 and 279,613.40

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Solution

The fourth proportional to 509,050.76, 702,495.81 and 279,613.40 is: 385,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,050.76 : 702,495.81 = 279,613.40 : x
  2. Step 2: Convert to fraction form
    509,050.76/702,495.81 = 279,613.40/x
  3. Step 3: Cross multiply
    509,050.76x = 702,495.81 × 279,613.40
  4. Step 4: Simplify right side
    509,050.76x = 196,427,241,919.85
  5. Step 5: Solve for x
    x = 196,427,241,919.85/509,050.76
  6. Step 6: Final answer
    x = 385,869.66

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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.