Home / 1,126,807.42-1,555,143.16-643,263.34

Finding the Fourth Proportional to 1,126,807.42, 1,555,143.16 and 643,263.34

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Solution

The fourth proportional to 1,126,807.42, 1,555,143.16 and 643,263.34 is: 887,788.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,807.42 : 1,555,143.16 = 643,263.34 : x
  2. Step 2: Convert to fraction form
    1,126,807.42/1,555,143.16 = 643,263.34/x
  3. Step 3: Cross multiply
    1,126,807.42x = 1,555,143.16 × 643,263.34
  4. Step 4: Simplify right side
    1,126,807.42x = 1,000,366,583,279.75
  5. Step 5: Solve for x
    x = 1,000,366,583,279.75/1,126,807.42
  6. Step 6: Final answer
    x = 887,788.42

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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.