Home / 479,787.64-661,867.80-286,058.72

Finding the Fourth Proportional to 479,787.64, 661,867.80 and 286,058.72

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Solution

The fourth proportional to 479,787.64, 661,867.80 and 286,058.72 is: 394,618.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,787.64 : 661,867.80 = 286,058.72 : x
  2. Step 2: Convert to fraction form
    479,787.64/661,867.80 = 286,058.72/x
  3. Step 3: Cross multiply
    479,787.64x = 661,867.80 × 286,058.72
  4. Step 4: Simplify right side
    479,787.64x = 189,333,055,677.22
  5. Step 5: Solve for x
    x = 189,333,055,677.22/479,787.64
  6. Step 6: Final answer
    x = 394,618.45

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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.