Home / 847,289.12-1,270,318.20-397,778.72

Finding the Fourth Proportional to 847,289.12, 1,270,318.20 and 397,778.72

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Solution

The fourth proportional to 847,289.12, 1,270,318.20 and 397,778.72 is: 596,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,289.12 : 1,270,318.20 = 397,778.72 : x
  2. Step 2: Convert to fraction form
    847,289.12/1,270,318.20 = 397,778.72/x
  3. Step 3: Cross multiply
    847,289.12x = 1,270,318.20 × 397,778.72
  4. Step 4: Simplify right side
    847,289.12x = 505,305,547,588.70
  5. Step 5: Solve for x
    x = 505,305,547,588.70/847,289.12
  6. Step 6: Final answer
    x = 596,379.13

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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.