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Finding the Fourth Proportional to 528,444.75, 729,251.31 and 286,726.73

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Solution

The fourth proportional to 528,444.75, 729,251.31 and 286,726.73 is: 395,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,444.75 : 729,251.31 = 286,726.73 : x
  2. Step 2: Convert to fraction form
    528,444.75/729,251.31 = 286,726.73/x
  3. Step 3: Cross multiply
    528,444.75x = 729,251.31 × 286,726.73
  4. Step 4: Simplify right side
    528,444.75x = 209,095,839,818.26
  5. Step 5: Solve for x
    x = 209,095,839,818.26/528,444.75
  6. Step 6: Final answer
    x = 395,681.55

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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.