Home / 638,108.01-880,607.90-351,646.65

Finding the Fourth Proportional to 638,108.01, 880,607.90 and 351,646.65

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Solution

The fourth proportional to 638,108.01, 880,607.90 and 351,646.65 is: 485,282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,108.01 : 880,607.90 = 351,646.65 : x
  2. Step 2: Convert to fraction form
    638,108.01/880,607.90 = 351,646.65/x
  3. Step 3: Cross multiply
    638,108.01x = 880,607.90 × 351,646.65
  4. Step 4: Simplify right side
    638,108.01x = 309,662,818,877.65
  5. Step 5: Solve for x
    x = 309,662,818,877.65/638,108.01
  6. Step 6: Final answer
    x = 485,282.76

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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.