Home / 860,157.05-1,289,429.80-291,139.97

Finding the Fourth Proportional to 860,157.05, 1,289,429.80 and 291,139.97

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Solution

The fourth proportional to 860,157.05, 1,289,429.80 and 291,139.97 is: 436,437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,157.05 : 1,289,429.80 = 291,139.97 : x
  2. Step 2: Convert to fraction form
    860,157.05/1,289,429.80 = 291,139.97/x
  3. Step 3: Cross multiply
    860,157.05x = 1,289,429.80 × 291,139.97
  4. Step 4: Simplify right side
    860,157.05x = 375,404,553,289.11
  5. Step 5: Solve for x
    x = 375,404,553,289.11/860,157.05
  6. Step 6: Final answer
    x = 436,437.22

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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.