Home / 947,355.20-1,420,514.40-385,755.20

Finding the Fourth Proportional to 947,355.20, 1,420,514.40 and 385,755.20

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Solution

The fourth proportional to 947,355.20, 1,420,514.40 and 385,755.20 is: 578,421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,355.20 : 1,420,514.40 = 385,755.20 : x
  2. Step 2: Convert to fraction form
    947,355.20/1,420,514.40 = 385,755.20/x
  3. Step 3: Cross multiply
    947,355.20x = 1,420,514.40 × 385,755.20
  4. Step 4: Simplify right side
    947,355.20x = 547,970,816,474.88
  5. Step 5: Solve for x
    x = 547,970,816,474.88/947,355.20
  6. Step 6: Final answer
    x = 578,421.71

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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.