Home / 686,352.40-1,029,048.60-405,725.20

Finding the Fourth Proportional to 686,352.40, 1,029,048.60 and 405,725.20

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Solution

The fourth proportional to 686,352.40, 1,029,048.60 and 405,725.20 is: 608,304.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,352.40 : 1,029,048.60 = 405,725.20 : x
  2. Step 2: Convert to fraction form
    686,352.40/1,029,048.60 = 405,725.20/x
  3. Step 3: Cross multiply
    686,352.40x = 1,029,048.60 × 405,725.20
  4. Step 4: Simplify right side
    686,352.40x = 417,510,949,044.72
  5. Step 5: Solve for x
    x = 417,510,949,044.72/686,352.40
  6. Step 6: Final answer
    x = 608,304.06

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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.