Home / 528,623.87-729,501.65-286,906.44

Finding the Fourth Proportional to 528,623.87, 729,501.65 and 286,906.44

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Solution

The fourth proportional to 528,623.87, 729,501.65 and 286,906.44 is: 395,931.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,623.87 : 729,501.65 = 286,906.44 : x
  2. Step 2: Convert to fraction form
    528,623.87/729,501.65 = 286,906.44/x
  3. Step 3: Cross multiply
    528,623.87x = 729,501.65 × 286,906.44
  4. Step 4: Simplify right side
    528,623.87x = 209,298,719,941.09
  5. Step 5: Solve for x
    x = 209,298,719,941.09/528,623.87
  6. Step 6: Final answer
    x = 395,931.27

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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.