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Finding the Fourth Proportional to 542,809.85, 749,063.12 and 313,359.39

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Solution

The fourth proportional to 542,809.85, 749,063.12 and 313,359.39 is: 432,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,809.85 : 749,063.12 = 313,359.39 : x
  2. Step 2: Convert to fraction form
    542,809.85/749,063.12 = 313,359.39/x
  3. Step 3: Cross multiply
    542,809.85x = 749,063.12 × 313,359.39
  4. Step 4: Simplify right side
    542,809.85x = 234,725,960,787.90
  5. Step 5: Solve for x
    x = 234,725,960,787.90/542,809.85
  6. Step 6: Final answer
    x = 432,427.60

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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.