Home / 993,516.60-1,489,438.98-432,128.28

Finding the Fourth Proportional to 993,516.60, 1,489,438.98 and 432,128.28

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Solution

The fourth proportional to 993,516.60, 1,489,438.98 and 432,128.28 is: 647,828.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,516.60 : 1,489,438.98 = 432,128.28 : x
  2. Step 2: Convert to fraction form
    993,516.60/1,489,438.98 = 432,128.28/x
  3. Step 3: Cross multiply
    993,516.60x = 1,489,438.98 × 432,128.28
  4. Step 4: Simplify right side
    993,516.60x = 643,628,704,592.36
  5. Step 5: Solve for x
    x = 643,628,704,592.36/993,516.60
  6. Step 6: Final answer
    x = 647,828.84

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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.