Home / 621,005.40-931,508.10-306,077.40

Finding the Fourth Proportional to 621,005.40, 931,508.10 and 306,077.40

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Solution

The fourth proportional to 621,005.40, 931,508.10 and 306,077.40 is: 459,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,005.40 : 931,508.10 = 306,077.40 : x
  2. Step 2: Convert to fraction form
    621,005.40/931,508.10 = 306,077.40/x
  3. Step 3: Cross multiply
    621,005.40x = 931,508.10 × 306,077.40
  4. Step 4: Simplify right side
    621,005.40x = 285,113,577,326.94
  5. Step 5: Solve for x
    x = 285,113,577,326.94/621,005.40
  6. Step 6: Final answer
    x = 459,116.10

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Similar ratio
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1.5x scale

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.