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Finding the Fourth Proportional to 528,486.87, 790,900.52 and 325,999.83

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Solution

The fourth proportional to 528,486.87, 790,900.52 and 325,999.83 is: 487,871.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,486.87 : 790,900.52 = 325,999.83 : x
  2. Step 2: Convert to fraction form
    528,486.87/790,900.52 = 325,999.83/x
  3. Step 3: Cross multiply
    528,486.87x = 790,900.52 × 325,999.83
  4. Step 4: Simplify right side
    528,486.87x = 257,833,433,436.91
  5. Step 5: Solve for x
    x = 257,833,433,436.91/528,486.87
  6. Step 6: Final answer
    x = 487,871.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.