Home / 638,216.96-880,739.40-351,737.04

Finding the Fourth Proportional to 638,216.96, 880,739.40 and 351,737.04

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Solution

The fourth proportional to 638,216.96, 880,739.40 and 351,737.04 is: 485,397.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,216.96 : 880,739.40 = 351,737.04 : x
  2. Step 2: Convert to fraction form
    638,216.96/880,739.40 = 351,737.04/x
  3. Step 3: Cross multiply
    638,216.96x = 880,739.40 × 351,737.04
  4. Step 4: Simplify right side
    638,216.96x = 309,788,669,567.38
  5. Step 5: Solve for x
    x = 309,788,669,567.38/638,216.96
  6. Step 6: Final answer
    x = 485,397.11

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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.