Home / 528,621.94-729,479.77-286,899.67

Finding the Fourth Proportional to 528,621.94, 729,479.77 and 286,899.67

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Solution

The fourth proportional to 528,621.94, 729,479.77 and 286,899.67 is: 395,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,621.94 : 729,479.77 = 286,899.67 : x
  2. Step 2: Convert to fraction form
    528,621.94/729,479.77 = 286,899.67/x
  3. Step 3: Cross multiply
    528,621.94x = 729,479.77 × 286,899.67
  4. Step 4: Simplify right side
    528,621.94x = 209,287,505,284.68
  5. Step 5: Solve for x
    x = 209,287,505,284.68/528,621.94
  6. Step 6: Final answer
    x = 395,911.50

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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.