Home / 1,283,139.55-1,771,127.18-739,638.61

Finding the Fourth Proportional to 1,283,139.55, 1,771,127.18 and 739,638.61

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Solution

The fourth proportional to 1,283,139.55, 1,771,127.18 and 739,638.61 is: 1,020,928.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283,139.55 : 1,771,127.18 = 739,638.61 : x
  2. Step 2: Convert to fraction form
    1,283,139.55/1,771,127.18 = 739,638.61/x
  3. Step 3: Cross multiply
    1,283,139.55x = 1,771,127.18 × 739,638.61
  4. Step 4: Simplify right side
    1,283,139.55x = 1,309,994,045,548.42
  5. Step 5: Solve for x
    x = 1,309,994,045,548.42/1,283,139.55
  6. Step 6: Final answer
    x = 1,020,928.74

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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.