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Finding the Fourth Proportional to 528,586, 729,449.06 and 286,868.52

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Solution

The fourth proportional to 528,586, 729,449.06 and 286,868.52 is: 395,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,586 : 729,449.06 = 286,868.52 : x
  2. Step 2: Convert to fraction form
    528,586/729,449.06 = 286,868.52/x
  3. Step 3: Cross multiply
    528,586x = 729,449.06 × 286,868.52
  4. Step 4: Simplify right side
    528,586x = 209,255,967,176.00
  5. Step 5: Solve for x
    x = 209,255,967,176.00/528,586
  6. Step 6: Final answer
    x = 395,878.75

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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.