Home / 847,810.70-1,272,700.20-511,231.40

Finding the Fourth Proportional to 847,810.70, 1,272,700.20 and 511,231.40

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Solution

The fourth proportional to 847,810.70, 1,272,700.20 and 511,231.40 is: 767,440.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,810.70 : 1,272,700.20 = 511,231.40 : x
  2. Step 2: Convert to fraction form
    847,810.70/1,272,700.20 = 511,231.40/x
  3. Step 3: Cross multiply
    847,810.70x = 1,272,700.20 × 511,231.40
  4. Step 4: Simplify right side
    847,810.70x = 650,644,305,026.28
  5. Step 5: Solve for x
    x = 650,644,305,026.28/847,810.70
  6. Step 6: Final answer
    x = 767,440.54

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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.