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Finding the Fourth Proportional to 529,358.84, 730,519.81 and 287,641.41

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Solution

The fourth proportional to 529,358.84, 730,519.81 and 287,641.41 is: 396,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,358.84 : 730,519.81 = 287,641.41 : x
  2. Step 2: Convert to fraction form
    529,358.84/730,519.81 = 287,641.41/x
  3. Step 3: Cross multiply
    529,358.84x = 730,519.81 × 287,641.41
  4. Step 4: Simplify right side
    529,358.84x = 210,127,750,449.94
  5. Step 5: Solve for x
    x = 210,127,750,449.94/529,358.84
  6. Step 6: Final answer
    x = 396,947.65

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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.