Home / 758,939.10-1,138,408.65-285,730.62

Finding the Fourth Proportional to 758,939.10, 1,138,408.65 and 285,730.62

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Solution

The fourth proportional to 758,939.10, 1,138,408.65 and 285,730.62 is: 428,595.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,939.10 : 1,138,408.65 = 285,730.62 : x
  2. Step 2: Convert to fraction form
    758,939.10/1,138,408.65 = 285,730.62/x
  3. Step 3: Cross multiply
    758,939.10x = 1,138,408.65 × 285,730.62
  4. Step 4: Simplify right side
    758,939.10x = 325,278,209,377.86
  5. Step 5: Solve for x
    x = 325,278,209,377.86/758,939.10
  6. Step 6: Final answer
    x = 428,595.93

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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.