Home / 528,835.75-729,793.34-290,371.75

Finding the Fourth Proportional to 528,835.75, 729,793.34 and 290,371.75

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Solution

The fourth proportional to 528,835.75, 729,793.34 and 290,371.75 is: 400,713.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,835.75 : 729,793.34 = 290,371.75 : x
  2. Step 2: Convert to fraction form
    528,835.75/729,793.34 = 290,371.75/x
  3. Step 3: Cross multiply
    528,835.75x = 729,793.34 × 290,371.75
  4. Step 4: Simplify right side
    528,835.75x = 211,911,369,274.15
  5. Step 5: Solve for x
    x = 211,911,369,274.15/528,835.75
  6. Step 6: Final answer
    x = 400,713.02

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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.