Home / 825,403.55-1,138,574.31-518,994.83

Finding the Fourth Proportional to 825,403.55, 1,138,574.31 and 518,994.83

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Solution

The fourth proportional to 825,403.55, 1,138,574.31 and 518,994.83 is: 715,909.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,403.55 : 1,138,574.31 = 518,994.83 : x
  2. Step 2: Convert to fraction form
    825,403.55/1,138,574.31 = 518,994.83/x
  3. Step 3: Cross multiply
    825,403.55x = 1,138,574.31 × 518,994.83
  4. Step 4: Simplify right side
    825,403.55x = 590,914,174,767.95
  5. Step 5: Solve for x
    x = 590,914,174,767.95/825,403.55
  6. Step 6: Final answer
    x = 715,909.42

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Double scale
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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.