Home / 813,299.28-1,122,336.86-450,715.64

Finding the Fourth Proportional to 813,299.28, 1,122,336.86 and 450,715.64

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Solution

The fourth proportional to 813,299.28, 1,122,336.86 and 450,715.64 is: 621,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,299.28 : 1,122,336.86 = 450,715.64 : x
  2. Step 2: Convert to fraction form
    813,299.28/1,122,336.86 = 450,715.64/x
  3. Step 3: Cross multiply
    813,299.28x = 1,122,336.86 × 450,715.64
  4. Step 4: Simplify right side
    813,299.28x = 505,854,776,150.49
  5. Step 5: Solve for x
    x = 505,854,776,150.49/813,299.28
  6. Step 6: Final answer
    x = 621,978.64

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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.