Home / 643,925.82-888,710.04-385,812.96

Finding the Fourth Proportional to 643,925.82, 888,710.04 and 385,812.96

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Solution

The fourth proportional to 643,925.82, 888,710.04 and 385,812.96 is: 532,477.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,925.82 : 888,710.04 = 385,812.96 : x
  2. Step 2: Convert to fraction form
    643,925.82/888,710.04 = 385,812.96/x
  3. Step 3: Cross multiply
    643,925.82x = 888,710.04 × 385,812.96
  4. Step 4: Simplify right side
    643,925.82x = 342,875,851,114.12
  5. Step 5: Solve for x
    x = 342,875,851,114.12/643,925.82
  6. Step 6: Final answer
    x = 532,477.25

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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.