Home / 1,391,741.15-1,920,570.17-818,818.16

Finding the Fourth Proportional to 1,391,741.15, 1,920,570.17 and 818,818.16

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Solution

The fourth proportional to 1,391,741.15, 1,920,570.17 and 818,818.16 is: 1,129,949.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,741.15 : 1,920,570.17 = 818,818.16 : x
  2. Step 2: Convert to fraction form
    1,391,741.15/1,920,570.17 = 818,818.16/x
  3. Step 3: Cross multiply
    1,391,741.15x = 1,920,570.17 × 818,818.16
  4. Step 4: Simplify right side
    1,391,741.15x = 1,572,597,719,053.35
  5. Step 5: Solve for x
    x = 1,572,597,719,053.35/1,391,741.15
  6. Step 6: Final answer
    x = 1,129,949.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.