Home / 1,126,568.18-1,554,726.35-643,288.57

Finding the Fourth Proportional to 1,126,568.18, 1,554,726.35 and 643,288.57

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Solution

The fourth proportional to 1,126,568.18, 1,554,726.35 and 643,288.57 is: 887,773.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,568.18 : 1,554,726.35 = 643,288.57 : x
  2. Step 2: Convert to fraction form
    1,126,568.18/1,554,726.35 = 643,288.57/x
  3. Step 3: Cross multiply
    1,126,568.18x = 1,554,726.35 × 643,288.57
  4. Step 4: Simplify right side
    1,126,568.18x = 1,000,137,679,442.74
  5. Step 5: Solve for x
    x = 1,000,137,679,442.74/1,126,568.18
  6. Step 6: Final answer
    x = 887,773.77

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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.