Home / 1,347,420.70-2,021,131.05-808,543.90

Finding the Fourth Proportional to 1,347,420.70, 2,021,131.05 and 808,543.90

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Solution

The fourth proportional to 1,347,420.70, 2,021,131.05 and 808,543.90 is: 1,212,815.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,420.70 : 2,021,131.05 = 808,543.90 : x
  2. Step 2: Convert to fraction form
    1,347,420.70/2,021,131.05 = 808,543.90/x
  3. Step 3: Cross multiply
    1,347,420.70x = 2,021,131.05 × 808,543.90
  4. Step 4: Simplify right side
    1,347,420.70x = 1,634,173,181,578.10
  5. Step 5: Solve for x
    x = 1,634,173,181,578.10/1,347,420.70
  6. Step 6: Final answer
    x = 1,212,815.85

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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.