Home / 638,421.95-881,028.20-351,952.29

Finding the Fourth Proportional to 638,421.95, 881,028.20 and 351,952.29

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Solution

The fourth proportional to 638,421.95, 881,028.20 and 351,952.29 is: 485,697.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,421.95 : 881,028.20 = 351,952.29 : x
  2. Step 2: Convert to fraction form
    638,421.95/881,028.20 = 351,952.29/x
  3. Step 3: Cross multiply
    638,421.95x = 881,028.20 × 351,952.29
  4. Step 4: Simplify right side
    638,421.95x = 310,079,893,424.46
  5. Step 5: Solve for x
    x = 310,079,893,424.46/638,421.95
  6. Step 6: Final answer
    x = 485,697.42

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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.