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Finding the Fourth Proportional to 638,410.60, 956,838.30 and 283,047.40

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Solution

The fourth proportional to 638,410.60, 956,838.30 and 283,047.40 is: 424,226.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,410.60 : 956,838.30 = 283,047.40 : x
  2. Step 2: Convert to fraction form
    638,410.60/956,838.30 = 283,047.40/x
  3. Step 3: Cross multiply
    638,410.60x = 956,838.30 × 283,047.40
  4. Step 4: Simplify right side
    638,410.60x = 270,830,593,035.42
  5. Step 5: Solve for x
    x = 270,830,593,035.42/638,410.60
  6. Step 6: Final answer
    x = 424,226.34

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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.