Home / 638,713.82-881,395.40-366,590.18

Finding the Fourth Proportional to 638,713.82, 881,395.40 and 366,590.18

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Solution

The fourth proportional to 638,713.82, 881,395.40 and 366,590.18 is: 505,877.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,713.82 : 881,395.40 = 366,590.18 : x
  2. Step 2: Convert to fraction form
    638,713.82/881,395.40 = 366,590.18/x
  3. Step 3: Cross multiply
    638,713.82x = 881,395.40 × 366,590.18
  4. Step 4: Simplify right side
    638,713.82x = 323,110,901,457.14
  5. Step 5: Solve for x
    x = 323,110,901,457.14/638,713.82
  6. Step 6: Final answer
    x = 505,877.42

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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.