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Finding the Fourth Proportional to 547,543.80, 821,315.70 and 547,543.80

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Solution

The fourth proportional to 547,543.80, 821,315.70 and 547,543.80 is: 821,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,543.80 : 821,315.70 = 547,543.80 : x
  2. Step 2: Convert to fraction form
    547,543.80/821,315.70 = 547,543.80/x
  3. Step 3: Cross multiply
    547,543.80x = 821,315.70 × 547,543.80
  4. Step 4: Simplify right side
    547,543.80x = 449,706,319,377.66
  5. Step 5: Solve for x
    x = 449,706,319,377.66/547,543.80
  6. Step 6: Final answer
    x = 821,315.70

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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.