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Finding the Fourth Proportional to 499,573.39, 689,410.78 and 270,130.13

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Solution

The fourth proportional to 499,573.39, 689,410.78 and 270,130.13 is: 372,779.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,573.39 : 689,410.78 = 270,130.13 : x
  2. Step 2: Convert to fraction form
    499,573.39/689,410.78 = 270,130.13/x
  3. Step 3: Cross multiply
    499,573.39x = 689,410.78 × 270,130.13
  4. Step 4: Simplify right side
    499,573.39x = 186,230,620,177.75
  5. Step 5: Solve for x
    x = 186,230,620,177.75/499,573.39
  6. Step 6: Final answer
    x = 372,779.31

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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.