Home / 821,780.12-1,134,058.92-459,217.64

Finding the Fourth Proportional to 821,780.12, 1,134,058.92 and 459,217.64

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Solution

The fourth proportional to 821,780.12, 1,134,058.92 and 459,217.64 is: 633,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,780.12 : 1,134,058.92 = 459,217.64 : x
  2. Step 2: Convert to fraction form
    821,780.12/1,134,058.92 = 459,217.64/x
  3. Step 3: Cross multiply
    821,780.12x = 1,134,058.92 × 459,217.64
  4. Step 4: Simplify right side
    821,780.12x = 520,779,860,863.35
  5. Step 5: Solve for x
    x = 520,779,860,863.35/821,780.12
  6. Step 6: Final answer
    x = 633,721.66

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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.