Home / 457,386.81-686,081.70-115,830.05

Finding the Fourth Proportional to 457,386.81, 686,081.70 and 115,830.05

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Solution

The fourth proportional to 457,386.81, 686,081.70 and 115,830.05 is: 173,745.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,386.81 : 686,081.70 = 115,830.05 : x
  2. Step 2: Convert to fraction form
    457,386.81/686,081.70 = 115,830.05/x
  3. Step 3: Cross multiply
    457,386.81x = 686,081.70 × 115,830.05
  4. Step 4: Simplify right side
    457,386.81x = 79,468,874,184.68
  5. Step 5: Solve for x
    x = 79,468,874,184.68/457,386.81
  6. Step 6: Final answer
    x = 173,745.44

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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.