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Finding the Fourth Proportional to 629,648.74, 868,938.74 and 357,762.72

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Solution

The fourth proportional to 629,648.74, 868,938.74 and 357,762.72 is: 493,725.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,648.74 : 868,938.74 = 357,762.72 : x
  2. Step 2: Convert to fraction form
    629,648.74/868,938.74 = 357,762.72/x
  3. Step 3: Cross multiply
    629,648.74x = 868,938.74 × 357,762.72
  4. Step 4: Simplify right side
    629,648.74x = 310,873,889,947.09
  5. Step 5: Solve for x
    x = 310,873,889,947.09/629,648.74
  6. Step 6: Final answer
    x = 493,725.90

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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.