Home / 528,677.87-729,579.15-286,960.38

Finding the Fourth Proportional to 528,677.87, 729,579.15 and 286,960.38

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Solution

The fourth proportional to 528,677.87, 729,579.15 and 286,960.38 is: 396,007.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,677.87 : 729,579.15 = 286,960.38 : x
  2. Step 2: Convert to fraction form
    528,677.87/729,579.15 = 286,960.38/x
  3. Step 3: Cross multiply
    528,677.87x = 729,579.15 × 286,960.38
  4. Step 4: Simplify right side
    528,677.87x = 209,360,310,124.08
  5. Step 5: Solve for x
    x = 209,360,310,124.08/528,677.87
  6. Step 6: Final answer
    x = 396,007.33

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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.