Home / 1,126,570.18-1,554,729.11-643,290.57

Finding the Fourth Proportional to 1,126,570.18, 1,554,729.11 and 643,290.57

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Solution

The fourth proportional to 1,126,570.18, 1,554,729.11 and 643,290.57 is: 887,776.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,570.18 : 1,554,729.11 = 643,290.57 : x
  2. Step 2: Convert to fraction form
    1,126,570.18/1,554,729.11 = 643,290.57/x
  3. Step 3: Cross multiply
    1,126,570.18x = 1,554,729.11 × 643,290.57
  4. Step 4: Simplify right side
    1,126,570.18x = 1,000,142,575,367.49
  5. Step 5: Solve for x
    x = 1,000,142,575,367.49/1,126,570.18
  6. Step 6: Final answer
    x = 887,776.54

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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.