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Finding the Fourth Proportional to 499,004.08, 688,930.72 and 324,740.32

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Solution

The fourth proportional to 499,004.08, 688,930.72 and 324,740.32 is: 448,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,004.08 : 688,930.72 = 324,740.32 : x
  2. Step 2: Convert to fraction form
    499,004.08/688,930.72 = 324,740.32/x
  3. Step 3: Cross multiply
    499,004.08x = 688,930.72 × 324,740.32
  4. Step 4: Simplify right side
    499,004.08x = 223,723,582,470.63
  5. Step 5: Solve for x
    x = 223,723,582,470.63/499,004.08
  6. Step 6: Final answer
    x = 448,340.19

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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.