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Finding the Fourth Proportional to 638,276.10, 956,150.55 and 413,792.70

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Solution

The fourth proportional to 638,276.10, 956,150.55 and 413,792.70 is: 619,869.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,276.10 : 956,150.55 = 413,792.70 : x
  2. Step 2: Convert to fraction form
    638,276.10/956,150.55 = 413,792.70/x
  3. Step 3: Cross multiply
    638,276.10x = 956,150.55 × 413,792.70
  4. Step 4: Simplify right side
    638,276.10x = 395,648,117,690.99
  5. Step 5: Solve for x
    x = 395,648,117,690.99/638,276.10
  6. Step 6: Final answer
    x = 619,869.86

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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.