Home / 638,351.03-880,924.20-351,875.90

Finding the Fourth Proportional to 638,351.03, 880,924.20 and 351,875.90

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Solution

The fourth proportional to 638,351.03, 880,924.20 and 351,875.90 is: 485,588.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,351.03 : 880,924.20 = 351,875.90 : x
  2. Step 2: Convert to fraction form
    638,351.03/880,924.20 = 351,875.90/x
  3. Step 3: Cross multiply
    638,351.03x = 880,924.20 × 351,875.90
  4. Step 4: Simplify right side
    638,351.03x = 309,975,995,706.78
  5. Step 5: Solve for x
    x = 309,975,995,706.78/638,351.03
  6. Step 6: Final answer
    x = 485,588.62

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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.