Home / 740,492.20-1,111,256.70-320,069.80

Finding the Fourth Proportional to 740,492.20, 1,111,256.70 and 320,069.80

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Solution

The fourth proportional to 740,492.20, 1,111,256.70 and 320,069.80 is: 480,328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,492.20 : 1,111,256.70 = 320,069.80 : x
  2. Step 2: Convert to fraction form
    740,492.20/1,111,256.70 = 320,069.80/x
  3. Step 3: Cross multiply
    740,492.20x = 1,111,256.70 × 320,069.80
  4. Step 4: Simplify right side
    740,492.20x = 355,679,709,717.66
  5. Step 5: Solve for x
    x = 355,679,709,717.66/740,492.20
  6. Step 6: Final answer
    x = 480,328.77

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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.