Home / 885,771.20-1,328,656.80-511,356.80

Finding the Fourth Proportional to 885,771.20, 1,328,656.80 and 511,356.80

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Solution

The fourth proportional to 885,771.20, 1,328,656.80 and 511,356.80 is: 767,035.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,771.20 : 1,328,656.80 = 511,356.80 : x
  2. Step 2: Convert to fraction form
    885,771.20/1,328,656.80 = 511,356.80/x
  3. Step 3: Cross multiply
    885,771.20x = 1,328,656.80 × 511,356.80
  4. Step 4: Simplify right side
    885,771.20x = 679,417,689,546.24
  5. Step 5: Solve for x
    x = 679,417,689,546.24/885,771.20
  6. Step 6: Final answer
    x = 767,035.20

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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.