Home / 643,590.40-888,327.04-401,727.36

Finding the Fourth Proportional to 643,590.40, 888,327.04 and 401,727.36

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Solution

The fourth proportional to 643,590.40, 888,327.04 and 401,727.36 is: 554,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,590.40 : 888,327.04 = 401,727.36 : x
  2. Step 2: Convert to fraction form
    643,590.40/888,327.04 = 401,727.36/x
  3. Step 3: Cross multiply
    643,590.40x = 888,327.04 × 401,727.36
  4. Step 4: Simplify right side
    643,590.40x = 356,865,276,595.81
  5. Step 5: Solve for x
    x = 356,865,276,595.81/643,590.40
  6. Step 6: Final answer
    x = 554,491.30

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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.