Home / 450,511.79-621,776.07-256,919.90

Finding the Fourth Proportional to 450,511.79, 621,776.07 and 256,919.90

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Solution

The fourth proportional to 450,511.79, 621,776.07 and 256,919.90 is: 354,589.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,511.79 : 621,776.07 = 256,919.90 : x
  2. Step 2: Convert to fraction form
    450,511.79/621,776.07 = 256,919.90/x
  3. Step 3: Cross multiply
    450,511.79x = 621,776.07 × 256,919.90
  4. Step 4: Simplify right side
    450,511.79x = 159,746,642,617.91
  5. Step 5: Solve for x
    x = 159,746,642,617.91/450,511.79
  6. Step 6: Final answer
    x = 354,589.26

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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.