Home / 820,109.40-1,230,164.10-503,539.80

Finding the Fourth Proportional to 820,109.40, 1,230,164.10 and 503,539.80

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Solution

The fourth proportional to 820,109.40, 1,230,164.10 and 503,539.80 is: 755,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,109.40 : 1,230,164.10 = 503,539.80 : x
  2. Step 2: Convert to fraction form
    820,109.40/1,230,164.10 = 503,539.80/x
  3. Step 3: Cross multiply
    820,109.40x = 1,230,164.10 × 503,539.80
  4. Step 4: Simplify right side
    820,109.40x = 619,436,584,881.18
  5. Step 5: Solve for x
    x = 619,436,584,881.18/820,109.40
  6. Step 6: Final answer
    x = 755,309.70

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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.