Home / 858,525.54-1,287,815.73-431,828.34

Finding the Fourth Proportional to 858,525.54, 1,287,815.73 and 431,828.34

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Solution

The fourth proportional to 858,525.54, 1,287,815.73 and 431,828.34 is: 647,756.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,525.54 : 1,287,815.73 = 431,828.34 : x
  2. Step 2: Convert to fraction form
    858,525.54/1,287,815.73 = 431,828.34/x
  3. Step 3: Cross multiply
    858,525.54x = 1,287,815.73 × 431,828.34
  4. Step 4: Simplify right side
    858,525.54x = 556,115,328,911.79
  5. Step 5: Solve for x
    x = 556,115,328,911.79/858,525.54
  6. Step 6: Final answer
    x = 647,756.30

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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.