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Finding the Fourth Proportional to 528,685.92, 729,587.22 and 286,968.48

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Solution

The fourth proportional to 528,685.92, 729,587.22 and 286,968.48 is: 396,016.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,685.92 : 729,587.22 = 286,968.48 : x
  2. Step 2: Convert to fraction form
    528,685.92/729,587.22 = 286,968.48/x
  3. Step 3: Cross multiply
    528,685.92x = 729,587.22 × 286,968.48
  4. Step 4: Simplify right side
    528,685.92x = 209,368,535,550.83
  5. Step 5: Solve for x
    x = 209,368,535,550.83/528,685.92
  6. Step 6: Final answer
    x = 396,016.86

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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.