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Finding the Fourth Proportional to 573,121.89, 790,916.41 and 315,022.71

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Solution

The fourth proportional to 573,121.89, 790,916.41 and 315,022.71 is: 434,735.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,121.89 : 790,916.41 = 315,022.71 : x
  2. Step 2: Convert to fraction form
    573,121.89/790,916.41 = 315,022.71/x
  3. Step 3: Cross multiply
    573,121.89x = 790,916.41 × 315,022.71
  4. Step 4: Simplify right side
    573,121.89x = 249,156,630,861.67
  5. Step 5: Solve for x
    x = 249,156,630,861.67/573,121.89
  6. Step 6: Final answer
    x = 434,735.85

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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.