Home / 812,011.77-1,120,536.27-463,165.97

Finding the Fourth Proportional to 812,011.77, 1,120,536.27 and 463,165.97

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Solution

The fourth proportional to 812,011.77, 1,120,536.27 and 463,165.97 is: 639,146.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,011.77 : 1,120,536.27 = 463,165.97 : x
  2. Step 2: Convert to fraction form
    812,011.77/1,120,536.27 = 463,165.97/x
  3. Step 3: Cross multiply
    812,011.77x = 1,120,536.27 × 463,165.97
  4. Step 4: Simplify right side
    812,011.77x = 518,994,262,812.05
  5. Step 5: Solve for x
    x = 518,994,262,812.05/812,011.77
  6. Step 6: Final answer
    x = 639,146.23

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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.