Home / 786,987.42-1,179,779.85-288,234.78

Finding the Fourth Proportional to 786,987.42, 1,179,779.85 and 288,234.78

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Solution

The fourth proportional to 786,987.42, 1,179,779.85 and 288,234.78 is: 432,095.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,987.42 : 1,179,779.85 = 288,234.78 : x
  2. Step 2: Convert to fraction form
    786,987.42/1,179,779.85 = 288,234.78/x
  3. Step 3: Cross multiply
    786,987.42x = 1,179,779.85 × 288,234.78
  4. Step 4: Simplify right side
    786,987.42x = 340,053,585,513.18
  5. Step 5: Solve for x
    x = 340,053,585,513.18/786,987.42
  6. Step 6: Final answer
    x = 432,095.33

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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.