Home / 638,072.95-880,579.34-351,592.69

Finding the Fourth Proportional to 638,072.95, 880,579.34 and 351,592.69

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Solution

The fourth proportional to 638,072.95, 880,579.34 and 351,592.69 is: 485,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,072.95 : 880,579.34 = 351,592.69 : x
  2. Step 2: Convert to fraction form
    638,072.95/880,579.34 = 351,592.69/x
  3. Step 3: Cross multiply
    638,072.95x = 880,579.34 × 351,592.69
  4. Step 4: Simplify right side
    638,072.95x = 309,605,258,909.03
  5. Step 5: Solve for x
    x = 309,605,258,909.03/638,072.95
  6. Step 6: Final answer
    x = 485,219.22

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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.