Home / 636,837.66-878,898.13-475,412.36

Finding the Fourth Proportional to 636,837.66, 878,898.13 and 475,412.36

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Solution

The fourth proportional to 636,837.66, 878,898.13 and 475,412.36 is: 656,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,837.66 : 878,898.13 = 475,412.36 : x
  2. Step 2: Convert to fraction form
    636,837.66/878,898.13 = 475,412.36/x
  3. Step 3: Cross multiply
    636,837.66x = 878,898.13 × 475,412.36
  4. Step 4: Simplify right side
    636,837.66x = 417,839,028,599.87
  5. Step 5: Solve for x
    x = 417,839,028,599.87/636,837.66
  6. Step 6: Final answer
    x = 656,115.45

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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.