Home / 545,111.20-817,812.60-387,647.20

Finding the Fourth Proportional to 545,111.20, 817,812.60 and 387,647.20

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Solution

The fourth proportional to 545,111.20, 817,812.60 and 387,647.20 is: 581,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,111.20 : 817,812.60 = 387,647.20 : x
  2. Step 2: Convert to fraction form
    545,111.20/817,812.60 = 387,647.20/x
  3. Step 3: Cross multiply
    545,111.20x = 817,812.60 × 387,647.20
  4. Step 4: Simplify right side
    545,111.20x = 317,022,764,514.72
  5. Step 5: Solve for x
    x = 317,022,764,514.72/545,111.20
  6. Step 6: Final answer
    x = 581,574.48

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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.