Home / 638,465.90-881,089.79-351,996.26

Finding the Fourth Proportional to 638,465.90, 881,089.79 and 351,996.26

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Solution

The fourth proportional to 638,465.90, 881,089.79 and 351,996.26 is: 485,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,465.90 : 881,089.79 = 351,996.26 : x
  2. Step 2: Convert to fraction form
    638,465.90/881,089.79 = 351,996.26/x
  3. Step 3: Cross multiply
    638,465.90x = 881,089.79 × 351,996.26
  4. Step 4: Simplify right side
    638,465.90x = 310,140,304,638.76
  5. Step 5: Solve for x
    x = 310,140,304,638.76/638,465.90
  6. Step 6: Final answer
    x = 485,758.61

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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.