Home / 863,645.72-1,295,187.90-287,114.24

Finding the Fourth Proportional to 863,645.72, 1,295,187.90 and 287,114.24

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Solution

The fourth proportional to 863,645.72, 1,295,187.90 and 287,114.24 is: 430,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,645.72 : 1,295,187.90 = 287,114.24 : x
  2. Step 2: Convert to fraction form
    863,645.72/1,295,187.90 = 287,114.24/x
  3. Step 3: Cross multiply
    863,645.72x = 1,295,187.90 × 287,114.24
  4. Step 4: Simplify right side
    863,645.72x = 371,866,888,130.13
  5. Step 5: Solve for x
    x = 371,866,888,130.13/863,645.72
  6. Step 6: Final answer
    x = 430,578.05

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1.5x scale

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.