Home / 919,590.32-1,379,514.90-320,465.36

Finding the Fourth Proportional to 919,590.32, 1,379,514.90 and 320,465.36

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Solution

The fourth proportional to 919,590.32, 1,379,514.90 and 320,465.36 is: 480,743.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,590.32 : 1,379,514.90 = 320,465.36 : x
  2. Step 2: Convert to fraction form
    919,590.32/1,379,514.90 = 320,465.36/x
  3. Step 3: Cross multiply
    919,590.32x = 1,379,514.90 × 320,465.36
  4. Step 4: Simplify right side
    919,590.32x = 442,086,739,053.86
  5. Step 5: Solve for x
    x = 442,086,739,053.86/919,590.32
  6. Step 6: Final answer
    x = 480,743.14

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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.