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Finding the Fourth Proportional to 528,253.21, 728,969.73 and 286,527.75

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Solution

The fourth proportional to 528,253.21, 728,969.73 and 286,527.75 is: 395,397.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,253.21 : 728,969.73 = 286,527.75 : x
  2. Step 2: Convert to fraction form
    528,253.21/728,969.73 = 286,527.75/x
  3. Step 3: Cross multiply
    528,253.21x = 728,969.73 × 286,527.75
  4. Step 4: Simplify right side
    528,253.21x = 208,870,056,555.01
  5. Step 5: Solve for x
    x = 208,870,056,555.01/528,253.21
  6. Step 6: Final answer
    x = 395,397.61

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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.