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Finding the Fourth Proportional to 547,259.20, 819,139.20 and 389,795.20

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Solution

The fourth proportional to 547,259.20, 819,139.20 and 389,795.20 is: 583,446.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,259.20 : 819,139.20 = 389,795.20 : x
  2. Step 2: Convert to fraction form
    547,259.20/819,139.20 = 389,795.20/x
  3. Step 3: Cross multiply
    547,259.20x = 819,139.20 × 389,795.20
  4. Step 4: Simplify right side
    547,259.20x = 319,296,528,291.84
  5. Step 5: Solve for x
    x = 319,296,528,291.84/547,259.20
  6. Step 6: Final answer
    x = 583,446.62

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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.