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Finding the Fourth Proportional to 525,943.84, 725,808.72 and 287,479.84

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Solution

The fourth proportional to 525,943.84, 725,808.72 and 287,479.84 is: 396,725.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,943.84 : 725,808.72 = 287,479.84 : x
  2. Step 2: Convert to fraction form
    525,943.84/725,808.72 = 287,479.84/x
  3. Step 3: Cross multiply
    525,943.84x = 725,808.72 × 287,479.84
  4. Step 4: Simplify right side
    525,943.84x = 208,655,374,696.21
  5. Step 5: Solve for x
    x = 208,655,374,696.21/525,943.84
  6. Step 6: Final answer
    x = 396,725.58

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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.