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Finding the Fourth Proportional to 885,199.80, 1,328,455.80 and 649,003.80

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Solution

The fourth proportional to 885,199.80, 1,328,455.80 and 649,003.80 is: 973,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,199.80 : 1,328,455.80 = 649,003.80 : x
  2. Step 2: Convert to fraction form
    885,199.80/1,328,455.80 = 649,003.80/x
  3. Step 3: Cross multiply
    885,199.80x = 1,328,455.80 × 649,003.80
  4. Step 4: Simplify right side
    885,199.80x = 862,172,862,332.04
  5. Step 5: Solve for x
    x = 862,172,862,332.04/885,199.80
  6. Step 6: Final answer
    x = 973,986.73

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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.