Home / 861,135.90-1,291,994.23-381,298.19

Finding the Fourth Proportional to 861,135.90, 1,291,994.23 and 381,298.19

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Solution

The fourth proportional to 861,135.90, 1,291,994.23 and 381,298.19 is: 572,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,135.90 : 1,291,994.23 = 381,298.19 : x
  2. Step 2: Convert to fraction form
    861,135.90/1,291,994.23 = 381,298.19/x
  3. Step 3: Cross multiply
    861,135.90x = 1,291,994.23 × 381,298.19
  4. Step 4: Simplify right side
    861,135.90x = 492,635,061,389.44
  5. Step 5: Solve for x
    x = 492,635,061,389.44/861,135.90
  6. Step 6: Final answer
    x = 572,075.86

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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.