Home / 645,965.32-890,508.32-454,384.12

Finding the Fourth Proportional to 645,965.32, 890,508.32 and 454,384.12

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Solution

The fourth proportional to 645,965.32, 890,508.32 and 454,384.12 is: 626,400.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,965.32 : 890,508.32 = 454,384.12 : x
  2. Step 2: Convert to fraction form
    645,965.32/890,508.32 = 454,384.12/x
  3. Step 3: Cross multiply
    645,965.32x = 890,508.32 × 454,384.12
  4. Step 4: Simplify right side
    645,965.32x = 404,632,839,335.88
  5. Step 5: Solve for x
    x = 404,632,839,335.88/645,965.32
  6. Step 6: Final answer
    x = 626,400.25

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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.