Home / 885,799.70-1,328,699.55-511,385.30

Finding the Fourth Proportional to 885,799.70, 1,328,699.55 and 511,385.30

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Solution

The fourth proportional to 885,799.70, 1,328,699.55 and 511,385.30 is: 767,077.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,799.70 : 1,328,699.55 = 511,385.30 : x
  2. Step 2: Convert to fraction form
    885,799.70/1,328,699.55 = 511,385.30/x
  3. Step 3: Cross multiply
    885,799.70x = 1,328,699.55 × 511,385.30
  4. Step 4: Simplify right side
    885,799.70x = 679,477,417,986.62
  5. Step 5: Solve for x
    x = 679,477,417,986.62/885,799.70
  6. Step 6: Final answer
    x = 767,077.95

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Double scale
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Similar ratio
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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.