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Finding the Fourth Proportional to 528,606.29, 729,476.65 and 286,888.88

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Solution

The fourth proportional to 528,606.29, 729,476.65 and 286,888.88 is: 395,906.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,606.29 : 729,476.65 = 286,888.88 : x
  2. Step 2: Convert to fraction form
    528,606.29/729,476.65 = 286,888.88/x
  3. Step 3: Cross multiply
    528,606.29x = 729,476.65 × 286,888.88
  4. Step 4: Simplify right side
    528,606.29x = 209,278,739,104.65
  5. Step 5: Solve for x
    x = 209,278,739,104.65/528,606.29
  6. Step 6: Final answer
    x = 395,906.64

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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.