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Finding the Fourth Proportional to 528,069.72, 728,726.70 and 298,623.48

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Solution

The fourth proportional to 528,069.72, 728,726.70 and 298,623.48 is: 412,095.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,069.72 : 728,726.70 = 298,623.48 : x
  2. Step 2: Convert to fraction form
    528,069.72/728,726.70 = 298,623.48/x
  3. Step 3: Cross multiply
    528,069.72x = 728,726.70 × 298,623.48
  4. Step 4: Simplify right side
    528,069.72x = 217,614,903,122.92
  5. Step 5: Solve for x
    x = 217,614,903,122.92/528,069.72
  6. Step 6: Final answer
    x = 412,095.02

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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.