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Finding the Fourth Proportional to 555,485.80, 828,350.93 and 550,433.80

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Solution

The fourth proportional to 555,485.80, 828,350.93 and 550,433.80 is: 820,817.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,485.80 : 828,350.93 = 550,433.80 : x
  2. Step 2: Convert to fraction form
    555,485.80/828,350.93 = 550,433.80/x
  3. Step 3: Cross multiply
    555,485.80x = 828,350.93 × 550,433.80
  4. Step 4: Simplify right side
    555,485.80x = 455,952,350,133.43
  5. Step 5: Solve for x
    x = 455,952,350,133.43/555,485.80
  6. Step 6: Final answer
    x = 820,817.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.