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Finding the Fourth Proportional to 545,734.48, 817,090.24 and 278,920.48

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Solution

The fourth proportional to 545,734.48, 817,090.24 and 278,920.48 is: 417,608.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,734.48 : 817,090.24 = 278,920.48 : x
  2. Step 2: Convert to fraction form
    545,734.48/817,090.24 = 278,920.48/x
  3. Step 3: Cross multiply
    545,734.48x = 817,090.24 × 278,920.48
  4. Step 4: Simplify right side
    545,734.48x = 227,903,201,944.12
  5. Step 5: Solve for x
    x = 227,903,201,944.12/545,734.48
  6. Step 6: Final answer
    x = 417,608.21

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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.