Home / 418,749.18-577,821.42-283,078.32

Finding the Fourth Proportional to 418,749.18, 577,821.42 and 283,078.32

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Solution

The fourth proportional to 418,749.18, 577,821.42 and 283,078.32 is: 390,612.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,749.18 : 577,821.42 = 283,078.32 : x
  2. Step 2: Convert to fraction form
    418,749.18/577,821.42 = 283,078.32/x
  3. Step 3: Cross multiply
    418,749.18x = 577,821.42 × 283,078.32
  4. Step 4: Simplify right side
    418,749.18x = 163,568,716,833.61
  5. Step 5: Solve for x
    x = 163,568,716,833.61/418,749.18
  6. Step 6: Final answer
    x = 390,612.63

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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.