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Finding the Fourth Proportional to 528,252.32, 728,983.89 and 286,534.28

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Solution

The fourth proportional to 528,252.32, 728,983.89 and 286,534.28 is: 395,414.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,252.32 : 728,983.89 = 286,534.28 : x
  2. Step 2: Convert to fraction form
    528,252.32/728,983.89 = 286,534.28/x
  3. Step 3: Cross multiply
    528,252.32x = 728,983.89 × 286,534.28
  4. Step 4: Simplify right side
    528,252.32x = 208,878,874,052.75
  5. Step 5: Solve for x
    x = 208,878,874,052.75/528,252.32
  6. Step 6: Final answer
    x = 395,414.97

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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.