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Finding the Fourth Proportional to 544,573.20, 815,110.20 and 387,109.20

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Solution

The fourth proportional to 544,573.20, 815,110.20 and 387,109.20 is: 579,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,573.20 : 815,110.20 = 387,109.20 : x
  2. Step 2: Convert to fraction form
    544,573.20/815,110.20 = 387,109.20/x
  3. Step 3: Cross multiply
    544,573.20x = 815,110.20 × 387,109.20
  4. Step 4: Simplify right side
    544,573.20x = 315,536,657,433.84
  5. Step 5: Solve for x
    x = 315,536,657,433.84/544,573.20
  6. Step 6: Final answer
    x = 579,420.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.