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Finding the Fourth Proportional to 528,490.44, 729,311.04 and 286,778.34

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Solution

The fourth proportional to 528,490.44, 729,311.04 and 286,778.34 is: 395,750.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,490.44 : 729,311.04 = 286,778.34 : x
  2. Step 2: Convert to fraction form
    528,490.44/729,311.04 = 286,778.34/x
  3. Step 3: Cross multiply
    528,490.44x = 729,311.04 × 286,778.34
  4. Step 4: Simplify right side
    528,490.44x = 209,150,609,394.87
  5. Step 5: Solve for x
    x = 209,150,609,394.87/528,490.44
  6. Step 6: Final answer
    x = 395,750.98

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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.