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Finding the Fourth Proportional to 638,937.60, 957,592.35 and 339,561.60

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Solution

The fourth proportional to 638,937.60, 957,592.35 and 339,561.60 is: 508,909.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,937.60 : 957,592.35 = 339,561.60 : x
  2. Step 2: Convert to fraction form
    638,937.60/957,592.35 = 339,561.60/x
  3. Step 3: Cross multiply
    638,937.60x = 957,592.35 × 339,561.60
  4. Step 4: Simplify right side
    638,937.60x = 325,161,590,513.76
  5. Step 5: Solve for x
    x = 325,161,590,513.76/638,937.60
  6. Step 6: Final answer
    x = 508,909.78

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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.