Home / 740,860.20-1,111,808.70-320,437.80

Finding the Fourth Proportional to 740,860.20, 1,111,808.70 and 320,437.80

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Solution

The fourth proportional to 740,860.20, 1,111,808.70 and 320,437.80 is: 480,880.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,860.20 : 1,111,808.70 = 320,437.80 : x
  2. Step 2: Convert to fraction form
    740,860.20/1,111,808.70 = 320,437.80/x
  3. Step 3: Cross multiply
    740,860.20x = 1,111,808.70 × 320,437.80
  4. Step 4: Simplify right side
    740,860.20x = 356,265,533,848.86
  5. Step 5: Solve for x
    x = 356,265,533,848.86/740,860.20
  6. Step 6: Final answer
    x = 480,880.92

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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.