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Finding the Fourth Proportional to 528,560.84, 729,414.45 and 286,843.46

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Solution

The fourth proportional to 528,560.84, 729,414.45 and 286,843.46 is: 395,844.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,560.84 : 729,414.45 = 286,843.46 : x
  2. Step 2: Convert to fraction form
    528,560.84/729,414.45 = 286,843.46/x
  3. Step 3: Cross multiply
    528,560.84x = 729,414.45 × 286,843.46
  4. Step 4: Simplify right side
    528,560.84x = 209,227,759,530.71
  5. Step 5: Solve for x
    x = 209,227,759,530.71/528,560.84
  6. Step 6: Final answer
    x = 395,844.23

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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.