Home / 1,123,339.20-1,685,008.80-698,186.40

Finding the Fourth Proportional to 1,123,339.20, 1,685,008.80 and 698,186.40

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Solution

The fourth proportional to 1,123,339.20, 1,685,008.80 and 698,186.40 is: 1,047,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,339.20 : 1,685,008.80 = 698,186.40 : x
  2. Step 2: Convert to fraction form
    1,123,339.20/1,685,008.80 = 698,186.40/x
  3. Step 3: Cross multiply
    1,123,339.20x = 1,685,008.80 × 698,186.40
  4. Step 4: Simplify right side
    1,123,339.20x = 1,176,450,228,040.32
  5. Step 5: Solve for x
    x = 1,176,450,228,040.32/1,123,339.20
  6. Step 6: Final answer
    x = 1,047,279.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.