Home / 638,125.98-880,619.67-351,656.34

Finding the Fourth Proportional to 638,125.98, 880,619.67 and 351,656.34

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Solution

The fourth proportional to 638,125.98, 880,619.67 and 351,656.34 is: 485,288.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,125.98 : 880,619.67 = 351,656.34 : x
  2. Step 2: Convert to fraction form
    638,125.98/880,619.67 = 351,656.34/x
  3. Step 3: Cross multiply
    638,125.98x = 880,619.67 × 351,656.34
  4. Step 4: Simplify right side
    638,125.98x = 309,675,490,084.21
  5. Step 5: Solve for x
    x = 309,675,490,084.21/638,125.98
  6. Step 6: Final answer
    x = 485,288.96

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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.